roots need oxygen, whenever you use a reservoir you really need to have airpump for oxygenating the solution, check this page out...great products, too,hope this helps.lw
http://www.americanagritech.com/grow...m.asp?ID_PK=13
latewood Reviewed by latewood on . How does Aquafarm/Waterfarm Recirculate Solution? I was looking at the Waterfarm (buckets attached to a controller-bucket), and wanting to build a system like it, but I want my system to be re-circulating. Where the nutrient solution in the bottom of the buckets is constantly flowing into the buckets, like NFT/SWC, and back out. Iā??ve read threads on the construction of Krusty buckets and DWC buckets, but no-one explains the path the nutes take through the lines and buckets. Some (like Waterfarms) only have a single Rating: 5