I’m growing 2 white widows and 2 girl guide platinum in pre buffered coco/perlite and I have an ongoing deficiency that I can’t figure out. I’m in week 6 of flower and I’m worried it’s going to catch up to my flowers. I’m running gh flora series at about 60% with 75% Cali magic and 50% koolbloom ph’d to 6.0 and ec 1.2 (0.2 without nutes) under a 600 watt hps in a 4x4. Any help would be greatly appreciated.
Imma guess phosphorus deficiency. If you open your pictures with paint.net (freeware) and hit the autocorrect filter, you will have nicer pics.
Much better. Magnesium deficiency or fungal. Kinda leaning towards fungal. Try a tablespoon of epsom salt to a gallon of water- make sure the water is distilled or at the very least purified.
What is your feeding schedule? Do you feed to run off? Do you feed plain water? Good luck and welcome to GC.
I didn’t flush when I flipped over to flower, it seems like opinions were split on that. I feed at lights on and again halfway through, I always feed to run off and I always feed with nutrients. And thanks! Happy to be here and thankful for the help
What I was thinking only effects the upper leafs or upper part of the plant . I am not sure if your plant has a potassium def from high sodium levels or sodium block . Normally caused be not flushing when plant is flipped . Is the top of your grow medium have white looking stuff on it ? If it does then you might want to flush for a week but I don't like to flush when the plant is in flowering .
Thanks for the reply headhunter. I went back in my journal and I forgot I did a flush with Florakleen in early flower because my output ec was really high. I only flushed for 1 day then the next few days I dropped my nutrients to 25% before slowly working my way back up. There’s no white looking stuff on the medium that I can see.