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Alright heres a lil bit about the setup. growin in 30something gallon rubbermaid tubs. usually fill them with 20 gallons initially, then once the roots get huge its more like 16-18 gallons. I have a 365 gallon per hour pump that pumps water from one corner of the tub to the other corner via a 2-3' section of garden hose. This is to add an 8" drop of water to the tub from the end of the garden hose to the water surface in the rez. This provides aeration and not too much heat. Sometimes i add an air pump to the res if the root ball is really wide to help with aeration.
Here are a few pics to show ya a bit more, followed by a pic of the canopy from two various tubs.
Hope this helps, any other questions ya may have feel free to ask!