Calcium Reactor Built out of a Canister Filter ???

[divemasterjim]

I want to build a Calcium Reactor and had an idea of using my Eheim 2213 Canister filter. Can anyone tell me why this wouldnt be a good idea?

http://www.thatpetplace.com/images/b/p2206b.jpg

:duh:

[Siklid]

it can be done ... i see no reason why it can not be done