Active Aqua Grow Flow 2.0 Expansion Kit w/ six 5 gal Square PotsDescription Product Details: This expansion kit supports the Grow Flow Ebb and Gro Controller unit. Maximize the performance of that system by adding six more buckets through this pack. These buckets work with all ebb and flow controllers, so you can augment whatever setup you've already got in place or are thinking of adding to your grow room. With multiple kits, your growing knows little bounds! Expand your ebb and flow system up to 48 plant sites