Well I can get that system delivered with 2 expansion sets, that makes a 24 site, for $550.00...that is US. So after you add up all the components that make up the "whole" system, I think it may be hard to make something yourself of the same quality... The buckets themselves bought at $4 bucks, would be $240.00, then you would have to drill them out, purchase the grommets, and then the fittings, then the hose...The control box is the real kicker, it has a double overflow valve and is shaped correctly for its purpose. Then there is the 50 gallon res, those are not cheap...I think after purchasing 3 of these, that they pay for themselves quickly...You can also flood and drain with Coco in the buckets, so it is great for someone whom wants to go more Organic....