Posted 05 April 2019 - 03:01 PM
Aren't you pretty new to this?
My very first suggestion would be multiple smaller tubs.
If you continue with one tub, you want enough total volume to get to 2 to 3 inches of substrate. Calculate that, or share the length and width and we guess pretty close.
I'd also suggest sticking to a simple substrate to start with.
Simplest, coir/verm 75:25
Do you have a ph tester or test strips? If you do, then add lime to your hydration water, get it to 8.0 or a little above. If you can't test ph, skip the lime. You don't need gypsum.
Straw and poo I'd skip if this is your first grow. Adding either really boosts the need for good pastuerization. Straight coir/verm doesn't give af, pastuerize, sterilize, deep fry, whatever it will work.
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