T
Tattooguy8
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- Feb 9, 2026
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Light is 7’ off the floor and roughly 3-4’ over the top of the plants. Roughly 180 ppfd. The room is 84 degrees previously 82 degrees.Im no expert but i always thought yellowing leaves especially down the edges, was from potassium deficiency? this will happen if your light is too intense for the plant...did you say you had it at 7 inches away? one other issue might be that you are giving calmag with the waterings , calcium, magnesium and potassium compete for space on the root zone , so if the plant is getting calcium it doesnt need it might just hang about on the roots and block the mag and potassium!
ive had similar issues with strange roots, (might have been me you saw post about 4 weeks ago ) i have this problem with my roots not filling the pot , they stay small and hairlike , so i am only uptaking about a quarter of the nutrients, . ive narrowed it down to overwatering, or cold soil temps or both ? (or possibly the fact i only gave it 4-5 weeks of veg) . i had a hidden plant last year i kept forgetting to water and when i repotted it the roots were perfect , thick white and filling the pot.
soil temp is definately important, i noticed it first with germination problems, as soon as i got a heat mat and got the soil temp uo to 22 0C or above i had 100% germination and proper growth .
I’ve definitely tried most of the viable watering techniques. Drybacks to the point of neglect and watering at a 50% dryback and everything in between. The picture of the pot in question was dried back pretty hard most of its life. Hard for me to keep up with my moms at times.