I bought this with plans to use it on my new tank, but went a different route. Everything is new in the boxes and has never been used. Only removed from the boxes for pics.
BM-T11 - 3 head dosing pump + 3 1.5 liter containers = $275
BM-T12 - 4 head add on pump + 4 1.5 liter containers = $250
BM-T11 - 3 head dosing pump + 3 1.5 liter containers = $275
BM-T12 - 4 head add on pump + 4 1.5 liter containers = $250