Grow Mediums Slow development hydro ?

dark 18 19c lights 23 24c,sensi grow a-b,supervit, ph 6. My english is very bad, I do not understand :(((((((
 
set PH just under 5.8

change plywood lids to black plastic

keep nutrients under 22oC

increase feed MAYBE ? :smokebuds:
 
I agree, replace the plywood with some plastic. Plywood is going to hold moisture and cause that algae buildup you are seeing.

Day temperatures should be around 27-28, night no lower than 22. The water in your buckets should be between about 19 - 20.

At their age nutrient solution should be about 1/4 of the recommended strength, no more than half strength. So 2 ml or less per liter of solution.

The pH in the buckets should be 5.8.

What is your native language? Perhaps we have someone here to can speak it.
 
plywood to cover,ph 5.8,120ppm,20/4
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That slime is a pain to deal with I have before! I suggest the 8 step process clean absolutely everything thoroughly you will get it
 
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