I have used GH nutrients 3 part for my first time grow, recently on my 2nd grow I switched 1 plant to Humboldt’s which is a 5 part, the leaves are starting to turn yellowish, which I believe is cal/Mag deficiency. Has anyone else had issues with Humboldt’s?
I haven’t added cal/mag yet, but I think I need to.
This is what I got, lights were off, but I think the pics are clear enough
When upper (younger) leaves are affected first, it means an Immobile Nutrient… my guess would be iron but, having see quite a bit of that lately, I have to ask if you checked the ph of your soil! You will need to do a soil slurry test.
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Thank you, yes I keep the ph between 5.5 and 6.5, I’m indoors with hydroponics. I’ve always used GH nutrients without an issue, but started experimenting with Humboldts, which is when this happened.
Have you looked at your roots recently
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Yes, they are blackish brown, but I contribute that to Humboldt’s Golden Tree, as it is a black color. They look healthy.
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COPY/PASTE the below list into your forum post.
Answer these simple questions the best you can.
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NA (non applicable)
-What strain, Seed bank, or bag seed (photo or auto)
-Age of plant
-Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF
-Vessels: Type and capacity of container (fabric, plastic, etc)
-PH and TDS of Water, Solution, runoff (if Applicable)
-PPM/TDS or EC of nutrient solution if applicable
-Method used to measure PH and TDS
-Indoor or Outdoor if indoor, size of grow space
-Light system List brand and wattage/spectrum
-Actual wattage draw of lights
-Current Light Schedule
-Temps; Day, Night
-Humidity; Day, Night
-Ventilation system; Yes, No, Size
-AC, Humidifier, De-humidifier,
-Co2; Yes, No
If growing Hydro some additional questions:
-DWC? RDWC? Autopots? Ebb and Flow? Other?
-Distance of liquid below net pot (DWC)
-Temperature of reservoir
-TDS of nutrient solution
-Amount of air to solution
Always try to upload a clear picture in white light of any issues you may have to allow the community to assist you.
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What strain, Seed bank, or bag seed (photo or auto)
Gorilla Glue- ILGM,
-Age of plant
Clone- been 4 weeks veg, now on 2 nd week of bloom
-Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF
Hydroponics
-Vessels: Type and capacity of container (fabric, plastic, etc)
Root Spa 5 gallon plastic tubs
-PH and TDS of Water, Solution, runoff (if Applicable
5.39, added hydrogaurd now 5.85
-PPM/TDS or EC of nutrient solution if applicable
1080, just added Hydrogaurd and it dropped to 1060
-Method used to measure PH and TDS
Vivosun meter
-Indoor or Outdoor if indoor, size of grow space
Indoor tent, 10x10
-Light system List brand and wattage/spectrum
1000 w Koscheal LED, spectrum, now sure
-Actual wattage draw of lights
Ink
-Current Light Schedule
12/12, on at 10 PM, off at 10AM
-Temps; Day, Night
Day 73 night about 77
-Humidity; Day, Night
50 day, 55-60 night
-Ventilation system; Yes, No, Size
Yes, 6”, one in, one out
-AC, Humidifier, De-humidifier,
I have humidifier, and de-humidifier, but not using either at this time, mostly summer time
-Co2; Yes, No
No
If growing Hydro some additional questions:
-DWC? RDWC? Autopots? Ebb and Flow? Other?
DWC
-Distance of liquid below net pot (DWC)
About 1-2”
-Temperature of reservoir
Same as tent
-TDS of nutrient solution
TDS? Not sure what this is
-Amount of air to solution
?
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That is a 100 watt light: not enough to flower out one plant FYI.
Temperature of nutrient solution needs to be below 70F or root rot will set in.
Total Dissolved Solids: expressed as ppm.
Are you running air in your buckets?
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1000 w Koscheal LED, spectrum, now sure
That is a 100 watt light: not enough to flower out one plant FYI.
I’ve recently bought 2 3000x lights and 1 4000w light.
When in flower I put 3 lights around the sides and one on top, what should I be using?
Mntmannw:
-Temperature of reservoir
Same as tent
Temperature of nutrient solution needs to be below 70F or root rot will set in.
What is the easiest way to keep water temp down?
TDS? Not sure what this is
Total Dissolved Solids: expressed as ppm.
-Amount of air to solution
?
Are you running air in your buckets?
Yes, air pump with hose running into tube on Root Spa buckets.
Putting a chiller in your reservoir takes care of that issue. There are a lot of options out there. I grow in coco but I’m sure @Myfriendis410 or one of the hydro growers on here can offer some suggestions. Until you get a chiller you could use frozen bottles of water.
I’m thinking for now frozen water bottles. I checked the water temp last night in each bucket, and they were between 65 and 67, so for right now I think I’m good, but will watch it closely as I have 4 in blooom now.
Thank you, this forum is very helpful, lots of good knowledgeable folks willing to help us that don’t know much (yet).
A lot of us tried the water bottles but they only last a short time which means changing out every couple of hours. Placing a reservoir outside the grow space can help as well as adding some insulation between the buckets and the light. A piece of one inch Styrofoam can drop temps a couple of degrees.
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Thank you,
As far as lighting, would the Bestva 4000w light be enough? It states it has a 7’ x 5’ coverage. My thoughts are to go with that light, and use the 1000w lights along the sides for some added light?
Any suggestions here?