4" Dual Chamber home made Calcium Reactor
w/ eheim 1250 circ pump and Minijet 404 feed pump
suitable for 50-70 gal reef tank
Requires CO2 system, not included
$50 ( the pump is worth more than that)
If you dont know what this is or how it works, you dont need it
http://vancouver.en.craigslist.ca/rd...032527446.html