Have a tank you can make a good use of it?
The BYOB Kits are designed to help you build your own compost tea brewer without buying the tanks. 
 
KITS DO NOT INCLUDE TANK OR TANK BULKHEAD FITTING. 
 
BYOB 550 KIT: Featuring an 1600 LPM Air Pump, lower stainless hydraulic unit, cam lock fittings, and a brew bag, this kit has everything you need to get started. It does not include a tank or bulkhead fitting.
 
BYOB 750 KIT : Featuring a 1833 LPM Air Pump, lower stainless hydraulic unit, cam lock fittings, and a brew bag, this kit has everything you need to get started.  
 
BYOB 1100 KIT: Features a 2746 LPM Air Pump, Stainless Steel Lower Hydraulic System, Cam Locks Fittings - Brew Bag
 
The BYOB 2200 KIT is the perfect way to build your own tea compost brewing system. It includes a 4332 LPM Air Pump, a stainless steel lower hydraulic system, and cam locks fittings - brew bag.