And look for improvement in new growth. The damaged leaves will not recover.
The Miracle Grow already has fertilizer in it, so adding more is making it worse. We’ve had people experience low soil ph with this soil which is something to watch for.
1 Like
Strain: White widow autoflower and the bigger one is unknown (a gift from a friend, that seed started everything).
Soil in pots, type: Miracle-grow
Ph- under the control for pass 4 days around 6
Strenght of nutrients mix: I don’t know what EC or Tds means but look at the picture.
Indoor.
Light system: Pair of 12"x12" 40W LED lights (specialized for marijuana grow, at least that’s what I’ve been told)
Temps Day, night: 68-76 Fahrenheit
Vent System: Exhaust fan through the wall (see the picture).
Ac, Humidifier, De-humidifier: none, just a n oscalating tower fan.
Co2: Yes, I have inch and half pvc tube into the room (see the picture again)
What you have going is " NUTRIENT BURN "
Stop feeding them nutrients and just water for a while. I see this happen every time I see M.G. being used for seedlings. The M.G is way to hot to begin with and adding nutrients just compounds the problem. If it gets any worse while just watering say after a week you may have to transplant them into much less nutrient soil.
Will
2 Likes
How do I fix the low ph in the soil?
Ok. Do you think I should go with different type of soil next time? If yes, can you recommend what brand?
Thank you for your knowledgeable answers Will. I’ll keep you posted.
Happy Holidays.
Best,
Roman
This is what I use
Feel free to copy this and save it to your files for future reference
Soil LESS Mix
Mixing ammounts will veary dependeds on how much you make. read instructions on each package for amounts.
1.) Pro Mix BX
Then add-----
2.) ( Mexican Bat Guano )
(10-2-1) This type of guano is very high nitrogen. This makes it perfect for the vegetative stages of growth. Even when the plant is young it can be fed a dilute mixture if the soil happens to contain very little nutrients. This type of guano can be used throughout the vegetative stage of growth.
( PLEASE NOTE )
( Jamaican Bat Guano (1-10-0.2) This type of bat guano is high in phosphorus. It is perfect for the early-mid flowering cycle once females are well established. )
3.) WORM CASTINGS
(because this stuff is so nutritious, the more the better).
Worm poop is gardening gold. Properly known as “worm casts”, what worms leave behind is actually
vital to the soil food web and is one of the key substances to maintaining healthy, nutrient-dense
soil for your plants. To quote from Sustainable World Radio:
“Research has shown that fresh earthworm casts are five times richer in available nitrogen,
seven times richer in available phosphates, and 11 times richer in available potash than the
surrounding upper six inches of soil. […]
Plant roots often seek out available earthworm casts. They follow the worm Burroughs and feed
on the nutrients in the available vicinity even if it means that the roots have to grow upward.”
While growers often spend a significant chunk of change on fertilizers throughout the grow cycle,
adding worm castings to your soil inundates them with the vital, natural nutrients they most desire.
4.) BONE MEAL
This additive is a nice way to get some additional phosphorous and calcium to your plants. An abundance of phosphorus
is especially important once your plant has reached flowering phase. To again draw from Gardening Know How:
“Using bone meal will help your flowering plants, like roses or bulbs, grow bigger and more plentiful flowers.”
As a flowering herb, the added phosphorus from bone meal helps your plant produce buds that are nice and big.
5.) BLOOD MEAL
Blood meal is yet another source of nitrogen. It’s also not vegan/vegetarian-friendly.
Blood meal is made from the dried blood of slaughtered animals, most predominantly cows.
Though the idea behind the fertilizer is a little unpleasant, its well-known natural gardening product.
Because it’s so nitrogen lush, it will help produce extensive growth during the vegetative phase.
6.) FISH MEAL
7.) Kelp and/or humid acid
Marijuana growers are very smart gardeners. There are a lot of things that growers do to increase
their yields that actually helping to build healthy soil microbiology. Adding kelp meal and humic
acids are some of these tasks. Both of these natural products are fungal foods. The interaction
between your plants roots and soil fungus helps the plant produce the nutrients it needs to thrive.
Kelp also adds a significant amount of potassium and copper to your soil mix.
8.) Epsom salt
A lot of people use Epsom salt to increase magnesium in their soil. As mentioned earlier,
you want to be careful not to add too much. You don’t want to over do it with the magnesium.
However, if your plant is showing signs of a magnesium deficiency, this is a very quick and
easy way to add some back in. Magnesium iscrucial to the absorption of other key nutrients,
like nitrogen and phosphorous.
All about microbes
Subcool’s soil mixture is definitely a good one. As is probably obvious by the various additives
in this recipe, this soil is extremely nutrient-rich. It’s chuck full of natural fertilizers and
makes it easy on the plant to have its favorite nutrients right at its root tips, so to speak.
Many of the extra or leftover additives can then be diluted with water and sprayed on during
the grow cycle as fertilizer.
If there’s one downfall to this recipe, it’s that it relies heavily on organic additives over
encouraging microorganism growth. In a plant’s natural environment, they get vital nutrients
from synergistic interactions between the plant and other organisms in its ecosystem. Plants
photosynthesize sunlight into sugars, and these sugars are in turn secreted by the roots. This
is a much more consciousprocess than commonly believed.
A plant can make an extremely wide variety of sugars and secrete them to attract specific types
of bacteria and microorganisms to its roots. These bacteria then eat these sugars, called exudates.
Through the bacterial metabolic process, essential nutrients like nitrogen are created for the plant
to use. Yet, nitrogen isn’t the only nutrient created through this process. This is how much-needed
vitamins and trace minerals make it into your plant.
9.) Dolomite lime
Recommended amount: 1 cup
Dolomite lime adds calcium and magnesium to your soil. Like rock phosphate, dolomite is also
a kind of mineral rock. It’s used to counteract mineral leaching. It also helps keep the
soil from becoming too acidic. Be careful not to add too much, though. It has high calcium
to magnesium ratio, and you may risk adding too much magnesium to your plants.
Azomite (trace elements)
Azomite is a brand of trace minerals. It’s mined from volcanic rock and contains over
70 minerals and trace elements. This particular brand is mined in Utah and is used to
re-mineralize soil. The product contains everything from gold, silver, and selenium
to potassium, choline, copper and calcium. Adding a few trace elements into your
increases the diversity of nutrients available to your plants .
10.)
Marijuana growers are very smart gardeners. There are a lot of things that growers do to increase
their yields that actually helping to build healthy soil microbiology. Adding kelp meal and humic
acids are some of these tasks. Both of these natural products are fungal foods. The interaction
between your plants roots and soil fungus helps the plant produce the nutrients it needs to thrive.
Kelp also adds a significant amount of potassium and copper to your soil mix.
.
3 Likes
Hi Will,
Thank you for all of your recommendations you gave me. I respect and I’m thankful for all of your experience. Here is my other question and I hope I’m not bothering you. Its about the lighting. I’m using a pair of 12"x12" 45W LED lights. And more I’m studying and reading about it, I have the feeling that I bought the wrong lights, even I was talked into it. Can you please recommend some correct lighting?
Also I have to tell you since I have the Ph level and the nutrient feeding is under the control. My plants are growing fast (see the picture). They almost doubled their size in a matter of a week and they look really healthy. That makes me really happy, but raising another question about the nutrient feeding? I think I don’t understand the feeding nutrient cycle. How ofen should I give them the nutrients. After that experience I had with the nutrient burn, I’m afraid to start feeding them again! I ordered some worm casting online, I have all kind of fertilizers at my house, but I’m so inexperience with the nutrient feeding. Please help me with that.
Thanks for your time.
Happy New Year.
Roman
3 Likes
First up, you never bother me at all I love doing this,
I[ll start with the nutrients. But you need to tell
1,) what you feed them and how much
2.) how offen
The lighting
*Can you give me some more info on the L.E.D Light
Thanks Will
1 Like
THE BEST L.E.D LIGHTD FOR 2017
#1
Product description
Size:1000W
King and King Plus series products are exclusively selling by KingLED,others are knockoff
Specifications :
Dimension: 12.2x8.26x2.36inches
Power:1000w(100pcs*10w)
LED Type: Epistar LEDs
Full spectrum for vegetative and flowering stage: 410nm, 430~440nm, 450~475nm, 620~630nm, 650~670nm, White, IR(730nm)
(It is hard to see clearly by eyes, very dim.Please don’t think they are not working. Instead, it plays an very important role in the flowering and fruiting stages of plants.)
Coverage Area: about 3.4 x 3.8 ft(The lighting area and the height are changeable according to different plants and environments.)
Lifespan: >50,000hours
Worldwide Voltage: 85v-265v
Working Frequency: 50~60Hz
Modular Power Cord(Available in US, UK, EU, AU,JP)
Using tips
Lighting Time setup: Vegetative Stage: 12-14 hours on; Flowering Stage: 9-12 hours on. Fruiting Stage: 7- 8 hours on
Suggest distance above plants: 2-3.5ft.
Attention
Do not use the lights in dripping water or anywhere where they will get wet, water and electricity can be a dangerous mixture.
The working environment is -20~40℃,45%RH~90%RH.
To protect the light, Pls cut off the power when there is a lightning strike.
Don’t touch or move when the light working.
Package includes:
1pcs King Plus 1000W LED grow light
1pcs free power cord
1pcs free hanging hook（Easy Installation）
3 years warranty: return and money back for customers within 30 days, ship free parts and free shipping to customers for a fix within 180days, ship free parts and the buyer pay the shipping fees for a fix more than 180days.
Product information
Size:1000W
Product Dimensions 12.2 x 2.4 x 8.3 inches
Item Weight 6.4 pounds
Shipping Weight 7.8 pounds (View shipping rates and policies)
Manufacturer KingLED
ASIN B0185OLBPK
Customer Reviews 4.3 out of 5 stars 532 customer reviews
4.3 out of 5 stars
Best Sellers Rank #2,260 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden)
#12 in Patio, Lawn & Garden > Gardening > Indoor Gardening & Hydroponics > Growing Lamps
#2
PlatinumLED Advanced Platinum Series P300 - 300w 12-band LED Grow Light
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P300 Product Specifications
Technical
Dimensions -19"x8.25"x3"
Weight - 13 lbs
LED Quantity - 100x3w US made LEDs.
Lifespan - 100,000 Hours/8-10 years.
Avg. Power Draw - 93w Veg / 180w Bloom.
90 Degree Secondary Focusing Lenses.
Voltage - AC85v-260v - All International Cords Available.
Auto-Voltage Sensing and Adjusting Power Drivers.
Coverage
Max/Veg Coverage at 18":
4.5’ x 3.8’
Core/Bloom Coverage at 18":
3’ x 2’
400w HPS Replacement
P300 Details
Welcome to the next generation of PlatinumLED Grow Lights – The most powerful LED grow lights available on the market today! We feature the highest PAR per watt of any other LED grow light along with the most complete 12-band spectrum available which ensures maximum yield with minimum power usage and heat. PAR and spectral output equal a quality, powerful LED grow light – not wattage draw! Our lights far out perform the cheaper units that consume excess power and yet emit a fraction of the intensity with an inferior spectral output compared to our professional quality LED grow lights. There is a remarkable difference between LED grow lights and it’s extremely important to choose wisely in a high yield, high payback situation. Higher yields, lower growing temperatures, better efficiency.
This is PlatinumLED.
The P300 effectively replaces a conventional 400w HPS grow light while only consuming 180 watts of actual power, while giving your plants 100% usable light that is perfectly tuned to create maximum photosynthetic response. The P300 is our most popular light thanks to it’s blend of power and affordability. It’s perfectly suited in all situations from closet grows to a full scale larger operation using multiple units to achieve full coverage. Herb or vegetable gardens will also excel under the P300.
The secret to the PlatinumLED success is combining an optimal blend of 12 different bands of complete light spectrum all the way from the depths of UV to the upper IR - giving your plants exactly the finely tuned spectrum that they need. Further intensified by integrated 90 degree secondary focusing lenses that penetrate deep within the canopy, our higher-output, cooler running, more efficient 3W LEDs simply blow away the competition.
What’s more, all of our lights feature selectable Veg and Bloom light spectrums to deliver maximum performance from seedling through final flower and harvest. The Veg spectrum features a more purple/blue heavy output which leaf development favors. Simply engage the Bloom switch together with the Veg switch to enable 100% panel power while shifting the spectral output to a bloom happy, pink/red heavy output. No need for any supplemental lighting as we have you covered from seedling to harvest.
Combine all of this with our industry leading 5 year warranty and 90-day money back guarantee and you’ll see why we offer the absolute best option for your LED grow lighting solution. You simply cannot find a better performing LED grow light at any price.
Par and Efficiency
Photosynthetic Active Radiation – ‘PAR’ – is the measurement of intensity emitted by an LED grow light. While wattage draw used to dictate growing power in old HID systems, with newer technology LED lights this is not the case! Thanks to our proprietary combination of ultra-efficient drivers and top bin US made diodes, PlatinumLED grow lights have the highest PAR per watt of any other LED grow light available today.
Through our complete 12-band spectral output, we’re able to use 100% of power usage towards actual growth. Traditional HID lights and white LEDs emit only 40% of usable light while the rest is wasted in power consumption and heat. Through the efficiency of our spectrum, our LED grow lights use less than half the electricity and heat to produce the same incredible growing power.
Read more
The Most Complete 12-band Spectral Output - From the depths of UV to the heights of Infra-Red
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PlatinumLED 12-Band Spectral Output vs Chlorophyl Absorption
The PlatinumLED spectrum matches as closely as possible to the rate of absorption by the various types of chlorophyl - resulting in maximum efficiency with 100% usable light energy.
HPS Spectral Output vs Chlorophyl Absorption
Traditional HPS grow lights emit only 40% usable light due to peaking in the wrong wavelengths. This results in wasted energy and excess heat - requiring more power to accomplish less.
Competing Brand Spectral Output vs Chlorophyl Absorption
Cheaper LED grow lights with limited spectrum produce inferior results through decreased efficiency and lower PAR - costing you time and money and wasting any money saved on purchase.
#3
Product description
Welcome to the next generation of VIPARSPECTRA “Reflector Style” V450 LED Grow Light, with full spectrum layout, reflector design and upgraded aluminum cooling heat sinks, is ideal for all kinds of indoor plants veg and flower at all growth stages.
Design:
- VIPARSPECTRA Spectrum has been developed by indoor growers over many years of careful experimentation and testing. With this light, you will see an increase in quality by growing bigger flowers that are dense and completely coated in resin.
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Specifications: - Replaces a 400 watt HPS/MH
- Dimensions: 15.8x8.4x2.4 inches
- Item Weight: 6.4 lbs
- Use for all stages of plant growth
- Max Coverage at 24" Height 3.5x3.5ft
- Core Coverage at 24" Height 2.5x2.5ft
- Avg. Power Draw: 200watt
- (90pcs) High Intensity 5Watt Bridgelux/Epileds LED Chips
- LEDs Angle: 90°
- Input Voltage: AC100-240V
- Frequency: 50-60Hz
- Lifespan: 100,000 hours
Package includes:
· 1 x Reflector 450W
· 1 x Hanging Kits
· 1 x 6ft Power Cord(US Standard 110V grounded 3 prong plug)
Attention please: - Extremely bright, do not look directly at the LED bulbs when the light is working.
- Indoor use only, not water-proof.
- No extra ballast is needed.
- Can be controlled by Timer.
Product information
Product Dimensions
15.8 x 8.4 x 2.4 inches
Item Weight
6.4 pounds
Shipping Weight
8.8 pounds (View shipping rates and policies)
Manufacturer
VIPARSPECTRA
ASIN
B015FLSOCE
Item model number
V450
Customer Reviews
Amazon.com customer reviews
4.6 out of 5 stars
Best Sellers Rank
#1,072 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden)
#4 in Patio, Lawn & Garden > Gardening > Indoor Gardening & Hydroponics > Growing Light Fixtures
#4
Product Description
Why Choose us?
MarsHydro led grow lights are the gains of 8-year continuously research and testing, and its primary goal is quality control.
Mars 300W led grow light has been accepted by more than 10 thousand growers because of its stable quality in last 3 years.
This grow light provide indoor plants with full spectrum, and satisfy their light needs at all growing stage.
All MarsHydro grow lights will be tested for 48 hours before packaging to decrease defective rate, and provide customers with good purchasing experience.
Attention Please:
Extremely bright, don’t look directly,please wear your sunglasses when looking at it.
Indoors use only,not water-proof
Stop using the light when the fan stops spinning.
Maintain stable voltage to avoid any damaged to light fixture.
Package Include:
1 MarsHydro300 led grow light
1 Power cord
1 pair of Steel hanging kits
Product information
Product Dimensions 13 x 2.8 x 7.9 inches
Item Weight 6.6 pounds
Shipping Weight 7.1 pounds (View shipping rates and policies)
Manufacturer LG-LED SOLUTIONS LIMITED
ASIN B00XC3LBI2
Customer Reviews 4.5 out of 5 stars 611 customer reviews
4.5 out of 5 stars
Best Sellers Rank #773 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden)
#3 in Patio, Lawn & Garden > Gardening > Indoor Gardening & Hydroponics > Growing Lamps
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Hi Will,
Sorry for the late response. Really busy.
1,) I have to explein a litlle bit. The yelow leafs show up before I gave them any nutrients. But I know now the soil cost the burn. So I feed them only twice. The first one was from miracle grow company
And after that in a matter of 3-5 days(I can’t remember) I used another fertilizer I bought on Amazon. The company name is Eco Lawn & Garden. The fertilizer itself they call is Eco NPK 16-4-8 (Nitrogen 16%, Phosphate 4% and Potassium 8%, but it also contains elements of boron, iron, zinc, cobalt, copper manganese, molybdenum and sulfur). I followed the instruction and applied a light mist to leaves to the point of runoof. I used it only once of each and when I got the ph level under the control I gave them only a water for pass 2x weeks. Everything was going well as I said in my previous response until yesterday. Some of the new leaves are curling and they’re white not only on the edges, but also in the middle of the leaves. (see pictures).. I hope you can see it under the LED lights. If not ill make a new pictures during the day. So I gave them another NPK 16-4-8 today. Its definitely a deficiency of something, I just dont know what is it. I looked on Bergman’s lab symptom checker and I didn’t find anything over there closer to this symptom. So as usualy I’m counting on your opinions. I’m really glad you doing this for me. Otherwise I would be in trouble :-).
2,) I’ll get back to you about the LED lights when I get this under the control.
Three of the plants just enter the flowering stage, the others are still behind. After all my mistakes I’m glad its white widow autoflower. Hopefuly I get some buds out of this.
Thanks for everything Will.
Roman
