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I need some help.

I not sure what this is. It’s only on the one plant. I feed it mega crop 3.5 grams per gallon. The last feeding was Friday night. I PH the to about 6.5-6.8ish. Light is at about 19-20 inches for the top. The white stuff is drywall dust that fell I wipe it all off

1 answer4 replies

Comments (5)

Mr. Grow It

Nov 17, 2020

Your plant looks pretty good. Do you know the pH and PPM of the runoff?

Mr. Grow It

Nov 17, 2020

Replying to

@Joe_grow937 I am for 6.0-7.0 pH when growing in soil. 6.5 being the sweet spot. For PPM in the medium, it depends on how old your plant it. Late Veg I like 450-700PPM (500 scale)

Joe_grow937

Nov 17, 2020

Replying to

My PPM was super high. when I did a flush and checked the run off it was like 4000. After I was done with the flush it was like 575. The PH was 6.8.

Mr. Grow It

Nov 18, 2020

Replying to

@Joe_grow937 What soil are you in?