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ProfessorSkiSlopes started grow question 3 years ago
Hi there, does anyone have any idea what the slight mottling is on the leaves of two of my plants. There are close-up pictures under Day 27 in Week 4. The discolouration is present across multiple leaves, but seems to only be happening to two plants out of 8. Thanks!
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Week 4
Leaves. Color - Mottling
skybound answered grow question 3 years ago
I suspect the mottling is a combo deficiency between Ca and K, though I'd go so far as to say that both look minor so maybe not try to fix either. If you're using nutrient salts you can isolate a specific element to tweak, but most nute brands have multiple things mixed in the bottles so if you tweak any thing, you end up tweaking several things which will cause other problems.

If interested, I made a tutorial for using Hydro Buddy to reverse engineer your nutrients, then you would be able to play around with tweaking the nutes in theory before actually changing anything in practice.

https://www.420magazine.com/community/threads/making-your-own-nutrient-concentrates.455187/