Hi so please bare with me, this is my first indoor grow, only 1 blueberry female plant. I have been using a fluorescent on my seedling, it was healthy doing great about 10 inches tall, I decided to go ahead and put my LED light on and within days the leaves have gotten yellow like spots on some of them and the plant looks droopy? I freaked out and put the fluorescent back on and now the plant looks better. What would cause this? Is it just too early for the strong led light yet? Or should I stay with the fluorescent and skip the leds?,
Photos would help
Water droplets on the leaves when the lights are on act like little magnifying glasses and burn spots on the leaves. Leds are more prone than florescents.
Best time to water is right when the lights are going out. Or just be careful not to get any water on the plant during watering.
Thanks!! I didn’t even think of that and I did spritz them a few times to get the humidity up because it was so low. Does it look big enough to have a led on it? Sorry I’m so new to this indoor growing thing.
Yeah you’re fine with led just keep it far enough away depending on how many watts you’re pulling. 18” -24” is usually pretty good just watch for stretch. Are you feeding any nutes yet? She looks to be about at the stage to start calling for veg regimen - shell pulled anything she has stored in leaves and roots to get by which can cause yellowing/rust spots. Make sure you don’t have a fan blowing directly on leaves real close - leaves can get wind burn if not enough space
Yes it looks fine. The new leaves will be ok too.
Start at the higher recommended height for your particular light and slowly move down if the plant stretches too much. Some stretch is good. Too much will make a tall weak plant.
Thanks guys! All of that are things I didn’t know so I appreciate it, gonna do all of that. And I haven’t started any nutrients yet no, I’ll get on that now.
Just for GP and for growers to review your setup which helps with better info:
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- What strain, Seed bank, or bag seed
- Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF
- Vessels: Pots, Grow beds, Buckets, Troths
- PH of Water, Solution, runoff (if Applicable)
- PPM/TDS or EC of nutrient solution if applicable
- Indoor or Outdoor
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- Humidity; Day, Night
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- Co2; Yes, No
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Im with the smart beagle above me. That support ticket would help miles.
The bottom spots do look like u wasted nute water on them. But the top ones appear to be a calmag deficiency. Have u been supplementing it?
The stronger intensity light makes the plant work harder. Which is good for us, but requires more nutrients for them.
That was exactly my first thought…more light = more photosynthesis = more feeding! The drooping may have been from the lights being too close. Check with the manufacturer of your LED as to what is a good height for your plants’ age.
Sorry I’ll post that now! I’m such a noob I’m a bit embarrassed. Thanks again for the help.
- What strain, Seed bank, or bag seed - blueberry feminized (not auto flower) I bought them from this site.
- Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF - organic soil only
- Vessels: Pots, Grow beds, Buckets, Troths -plastic pots is what it’s in now, I wasn’t sure if plastic or cloth would be better
- PH of Water, Solution, runoff (if Applicable) -idk this one, I do use dechlorinator in my spray bottle when I water, should I stop? Should I get the water tested?
- PPM/TDS or EC of nutrient solution if applicable- I haven’t added any nutrients yet, have a bottle of liquid veg bloom and tiger bloom but I haven’t used any of either yet.
- Indoor or Outdoor -indoor (first one I usually do outdoor and have had 0 issues)
- Light system - 600w full spectrum leds dual switch veg and flower
- Temps; Day, Night - stays at 70-75 almost all the time
- Humidity; Day, Night - 55-65 depending on when I water
- Ventilation system; Yes, No, Size -…I had no idea I needed a ventilation system
- AC, Humidifier, De-humidifier, - I have a rotating fan in with it right now, I do have a humidifier If I need to use it
- Co2; Yes, No - No
No need to be embarrassed…gotta start somewhere! Are you using tap water then? Is it pretty hard water? Yes, you’ll want decent pH and TDS/EC meters to keep track of what you’re feeding and how much your plants are eating. It’s difficult to say if they need more or less of something without knowing what’s in there to begin with. Go ahead and switch both veg and bloom switches on, to give your plants as much light as possible. Then, once you know the recommended height, start at about double that, and gradually lower your fixture to that height, watching how the plants respond. For example, if they seem to stretch, lower it a little more. If they grow nodes really close to one another, you can raise it some to get them to spread out a little. You could also just keep using the fluorescent (CFL or T5?) until the little gal gets a little bigger.
Yes I’ve been using tap water and it’s very hard water where I live, would buying filtered water be better? Okay I only had the veg switch on so I’ll do that in a week or so when I put the led back on, the fluorescent is a cfl but it’s a fish tank one with more of a blue spectrum and seems to really make seedlings do well I’ve noticed? Used them for years, I’m just brand new to using the leds, a little nervous I’m doing it all wrong. I think I deff had the light too close then because the manufacturer says 24” away and I had it closer to 12. Thanks for telling me about that! How much longer would you recommend leaving the fluorescent on before switching?
Depends on the wattage. Jefe ill let u handle this one. Solid advise so far
I’d wait until you have a couple more nodes and she’s not battling anything else, first. Bottled water would be better, but can get expensive. I got a reverse osmosis system that’s pretty popular around here, off amazon for around $60. It’s fairly wasteful, about 3:1 waste to good water, and it’s only 50 gallons per day, but it gives me very low if not 0 ppm water, on the cheap. I just keep several gallons filled, ready to go, to get over the slowness of it. The fish tank lights are probably good, as the blue spectrum will keep your plants short, which is nice for indoor. On your LEDs, I’d start around 36" or so if you have the space, see how she reacts, and go from there.
That’s a good point, too. If it’s a giant step up in wattage, leaving it up pretty high for starters will help with the transition.
Thank you!! you’ve helped me sooooo much. One last question the fluorescent is about 8 inches away from the plant since it’s only a 14watt cfl, does that sound right? Should I lower or raise a bit? Or just watch for the stretching and adjust if needed?
No worries, that’s why we’re here! I’m not real sure …I use 23 watt CFLs and usually keep them right down on them, maybe only a couple inches, but I only had them under those for a short while before going under LEDs, also 23 watt, but 3 or 4 of them over about a 2’ x 2’ area. She’s got decent stem length between nodes from the looks of it, so you can probably lower it some.