Help me please!

do you pack the perlite down? i dnt understand how you would use perlite cuz its like little pebbles..do you use it the same way as soil?
 
You can mix vermiculite and perlite. you don't press down perlite - you grow it as is. just wash it and take caution not to inhale its dust.

I always have heat problems... I try to run as much lights as possible and they never get me below 21°C.

pH of 8 is SLIGHTLY alkaline. its not the 6.8 marijuana likes but its not that far off. there are a lot of things to lower the medium pH and if your nutes don't do it you should do it yourself.
 
ok thanks for all your help guys, one plant died :( but the other one is starting to look better, and i just left it alone all i did was put it a little farther from the lights and i watered it, i am germinating four more seeds, and im gonna put two of the seedlings in just perlite, and two in a 50/50 vermiculite perlite mix and see how that works
 
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