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Should I use a cannister filter?

I just set up a second tank primarily for a RBTA and a pair of Clarkii clown fish. I will probably add another 4 small fish and some star polyps and mushrooms at some point. The tank is a 46 gallon bow (3 foot length )with about 65 pounds of live rock, Tek 5 T5 lighting, two Tunze 6025 Nano Stream powerheads, and a Deltec hang on back skimmer. I am not using a sump. Even though I can make a large % water change with a couple of buckets of new water, or water from my SPS tank with this size tank if I ever run into trouble, I was wondering if I should add a canister filter to my set up. If I did this, I would not use the bio media or noodles, and just use the sponge for mechanical filtration to trap debris. I could also use it for Phosban etc if needed.

I have no mechanical filtration in my SPS tank, but the debris eventually will end up in my sump which I can then clean out. This tank has no sump. I of course will have a clean up crew for the tank. Do you think the canister filter is a good idea or a waste of money. If it is a good idea, is Eheim still the way to go?

Thanks,
Ken
 
Imo it's not necessary. You have a skimmer and LR. That should be enough. I'd add a few more pounds of rock and call it a day.
 
To use a canister as mechanical filtration can help a lot, but in order to keep it from becomming a dirt trap, it should be cleaned weekly.

Ask yourself are you up to doing that every week. If not, you are better off with just the skimming.
 
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