What's the best bucket system out there? I have been reading up on the older sentinel mef system but can't find any. I was thinking of making a controller bucket with 3.5 gallon buckets filled with hydroton in a fabric pot and 1" fittings but not sure I'm capable of figuring out the float switch and automation. I will have 2x 4x8 tents with 18 buckets per tent. The lower they are the better so I can have more canopy area. Can anyone recommend a good already made controller bucket? I might utilize 2 controller buckets and alternate the fill drain between tents so my res will not have to be so big.