I'm not familiar with your specific tanks built in filter but if it is a true wet/dry filter, its safe to assume its handling the biological side of the filtration.
The 2227/2229 are great canisters for biological filtration. Because of the built in wet/dry chamber, it is more effective than most canisters for bio. However, if your current in tank wet/dry is already taking care of the biological filtration, it is an unnecessary function for your system. Also these canisters tend to be more expensive due to the wet/dry function and built in wave maker.
Both of the canisters you're looking at will provide a much similar mechanical filtration, so it really just comes down to how much you want to spend. Quite frankly, if you're just looking for added mechanical filtration, and are set on an Eheim brand canister, you're probably better off going with an older eheim classic. Best bang for your buck. Or there are always other cans that would fit your needs, like a filstar.
I'm not familiar with your specific tanks built in filter but if it is a true wet/dry filter, its safe to assume its handling the biological side of the filtration.
The 2227/2229 are great canisters for biological filtration. Because of the built in wet/dry chamber, it is more effective than most canisters for bio. However, if your current in tank wet/dry is already taking care of the biological filtration, it is an unnecessary function for your system. Also these canisters tend to be more expensive due to the wet/dry function and built in wave maker.
Both of the canisters you're looking at will provide a much similar mechanical filtration, so it really just comes down to how much you want to spend. Quite frankly, if you're just looking for added mechanical filtration, and are set on an Eheim brand canister, you're probably better off going with an older eheim classic. Best bang for your buck. Or there are always other cans that would fit your needs, like a filstar.
