Hi, didn't know if i should post i here or in the "Hydro Systems" so took my chances.
My friend just got a Flo Gro 500, ebb and flood system with Cogr Slabs as medium to grow in.
I heard people that would leave the water pump running 24/7 but the manual with the system says that 15 min every 2-3 hours is all you should use it.
So should he leave it on for maximum oxygen and root growth or will it just become to much water in the slabs and drown the plant? Any help on this is very appreciated!