Is better to have one Eheim Canister or two AquaClear 30 Hang On Filter for a 100LT

Nov 6, 2011
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I have a 100Lt fish tank with a comet goldfish, which is better to have two Aquaclear 30 hang on filter or an Eheim Canister 2211?

Also is there any other filters I should consider getting, and what is the best set up for a filtration system in goldfish tank?

Note: I know that 100LT tank is small for a comet goldfish, I will upgrade my fish tank to 1000lt when I move to my new house in 6 months.