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What is this white stuff on some of my leaves? I ...
Chi_Town_White_Boystarted grow question 6 years ago
What is this white stuff on some of my leaves? I had very minor pH fluctuations. It got a little warm -- about 83 degrees F for a day or two. Water temps got up to 75 for an hour or so. Light is pretty close. Any ideas what this is?
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Stickanswered grow question 6 years ago
Hi @Chi_Town_White_Boy! I think you just named it: pH fluctuations, getting worst very quickly because of hot roots and maybe light stress (your new lighting setup could be involved). You can tuck the most affected leaves to increase light & air penetration (they won't recover) and double check that your pH-pen is calibrated, while trying to maintain decent temperatures in the air / in the solution. The spots should not spread as long as your pH is fine. Hope this will help, keep us up-to-date and happy growing 👊
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