I have already finished one grow, I’m on my second now, but I’m already thinking of my third because I’m doing photos next, any ways , I’m using ocean floor on the bottom and happy frog on the top half of a 5 ga fabric pot. I’m using 2 mars hydro tsw2000’s, it’s 3 auto flowers , black berry, Girl Scout cookies, and Pineapple express , I’m like in week 4 of flower. I always seem to get the same problems around this time. Leaves curling down, yellowish leaves. Mostly on the blackberry, the other stained don’t seem to do as bad. I stay in range on ph, usually 6.3. Temp is 81 degrees, and humidity is 38%, I give them about a half a jug of water every 3 or 4 days. I’ve only feed like 3 times, and cal mag like 2 or three, any advice would be greatly appreciated!!! And also wondering why the stems turn purple???
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You don't have those all the way up in intensity do you?