200 Gallon Aquarium Canister Filter UV 9w UV Sterilizer Fish Tank SUNSUN HW-304B what do you think about this filter for my 125g oscar tank? (I do have aquatech 60s to supplement) also how do you determine how good a filter is? With gph?

P.s is there a bigger sunsun filter available? Or would 2 of them be sufficient to the fluval? I think I would prefer 2 filters for cycling reasons

To me filter canister filter quality is 2 major factors. Reliability and bio media capacity. GPH is secondary. I have no experience with the SunSun, but read that owners are initially satisfied. I say initially because longevity is undetermined. Will they last and perform well for 10yrs? More? I recommend what I have many years use with, that being the Filstars and Fluval FX series, both 5 and 6. There is also a newly introduced FX4. Same as the 6, smaller and I would assume less money. I also use Aquaclear 110 hobs in conjunction with canisters. Powerful and reliable, superior mechanical filtration, and decent bio assistance as well.

I ordered the sunsun should be here, next week... Next week I will order a second one. I will be putting 2 aquatech 60s on the 75 gal tank with a koi and shubunkin in it, and then 1-2 aquatech 60s on the 55 gal with either 6 SD or 4 angels. Does this sound good?