Hi all. I have been leaving a ton reading posts here but I need help! New grower. I'll include all I can: plants 3 weeks old all in coco using GH FloraNova nutes Full Spectrum LED in grow closet coco ph hovering around 7 even though all feedings at ph'd at 6.0 RunOff tests at the correct ph (6.0) switched from my filtered tap water a few days ago to distilled water (sick of starting at 100ppm) I raised light about 6 inches and fed a tea yesterday after allowing plants to release some moisture.
switched from my filtered tap water a few days ago to distilled water (sick of starting at 100ppm) There's nothing wrong with 100ppm. That's a good starting point, unless its sodium. If its from hard water, the minerals are usually good for the plant.
Thanks, I think I've worked out that the LED was too close... I've used CalMag as a base at 250 ppm the whole way... could be too much? IDK, they have been fine with it up to now.
I dont use LED in veg I use T5 right now so I keep them pretty far away - in my bloom room I use LED and I keep them real close
They look hungry. Go back to tap water for the reasons stated above. 250 ppm is a good feed for seedlings. You probably can transplant to one gallon pot in a week or so but I would mix 30% Perlite in with coco
The change in the plants corresponds with my change in H2O... I will revert back... Thanks a lot for the quick responses. The inner leaves are also sticking straight up currently?? Also did this last night before lights out.
These new pics suggest a magnesium deficiency. If the interveinal chlorosis continues, consider adding some epsom salts to your regime.
Nice to know! I have similar symptoms from time to time and I'd hit em with epsom salts. How did you determine that it was an iron deficiency?
Well, research, research, and more research. I looked at the picture of leaf deficiencies ( Nutrient deficiencies and excesses in Cannabis - Alchimia blog ) And thanks to Soil2Coco! My issue mostly looked like an iron issue. I also know that I've used CalMag the whole way liberally so didn't think that could be it. Switched to RO/Distilled H2O about 5 days ago and that is when the issue started. So, as in science class 35 years ago, I assumed the hypothesis and started my fix (went back to tap, also added iron chelate in small dose to the worst plants) and they are already bouncing back!
Now I’m only 36, but I’ve read about old timers throwing some nails into their soil for the iron as they rust becoming available to plants.
Read and heard the same thing! next step if what im doing doesnt work but I believe it already is working...