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05-10-2010, 02:56 PM #25
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Yellow leaves, spots - First grow - White Russian - CFL
OK, I stand by my assertion that your pH is too low. You need to add lime to balance the pH of the peat moss. Hydrated lime can be watered in, but don't try to change it too fast, and you NEED a soil test kit to know how much to change it and how much it's changed.
Originally Posted by mgjscdhl
I use a similar mix, but it's 50% potting soil like fox farm ocean forest. This adds nutrients and raises pH.
Humidity doesn't make much of a difference. I live in CO, where there is NO humidity a lot of the time, and it hasn't caused any problems. They seem to like high altitude and low humidity :thumbsup: However, the closer you can come to ideal the better, so keep the humidifier since you already have it.
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