sunken tank = in the ground or lower than the buckets
any cheap air pump I liked the 12 in airstones.
any black or hose that does not transmit light
I used a 750 gph pond pump.imp: :thumbsup:
oldsanclem Reviewed by oldsanclem on . Multi Flow Buckets What is the best pump to use for a 30 site multiflow bucket system? Rating: 5