Added a new canister filter, out with the old one or keep it?

[edmond]

I've had an eheim 2236 canister filter which is rated for 60 gallons for the past 3 years. I've upgraded to a Rena XP3 which is rated for 165 gallons a few days ago. Both of them are now running simultaneously.

I am thinking that two of them would be a lot of maintenance and remembering about changing/cleaning media for both. So I was thinking that I would take some of the bio balls media from the eheim and put into one of the chambers of the Rena.

How long should I run them both simultaneously before the Rena can take over completely?

Or do you suggest I keep both of them? I can just keep the bio balls media in the eheim and have different pads as needed in the Rena? Any other configurations you guys would suggest?

My Tank:
50 gallon SW tank with about 70 lbs of live rock.

Livestock: 2 clowns, firefish, lawnmower blenny, 6 line wrasse, mandarin dragonette. 10 hermit crabs, 5 snails and 2 emerald crabs.

Coral: bubble coral, small hammer head coral, small frogspawn, rose anemone.

Equipment: Rena XP3 & Eheim 2234 canister filters, inline uv filter, red sea hang on protein skimmer, 220W CFL Lighting.

 

[potatochobit]

probably some kind of sump setup would have been best.

as it is right now, I probably would dismantle and sell the old canister.
you could run two if you wanted to increase the current/flow, but 165G should be plenty and two canisters might look messy.
you could always add powerheads to increase flow, as well.

but maybe you want keep both for a week or two as the new filter gets settled in.