I thank you for the picture, as I was not aware that the pumps would allow the drain-back quality that your pictures shows they will.
I plan to have my
pump lines drilled and in tonight, should they be flush with the bottom of the bucket or is it okay to leave a bit of length inside so there is maybe 1/4 inch or so water in the bucket when fully drained?
As for the air stones within the buckets, is it alright to have them in the buckets only with no aeration in the
nutrient solution tub? If I need to I will buy a T or two and route a air bar into the tub as well. Also, is it safe to keep some lava rock in the bottom of the buckets so that it doesn't take so much water to fill the buckets, allowing for a quicker flood and longer nutrient soaks?
The timer I bought will time down to the seconds, which is awesome...I just have to figure out if it will allow me to put constant power to my air pump, and switched/timed power to my water pump.