Quarantine tank or container can house your fish in case the tank breaks or starts leaking. Quarantine tanks can also be used to house new or ill fish that need treatment. It doesn't have to be an aquarium, a large plastic bin is a good alternative. Spare heater: In case of malfunction, for a quarantine tank.December 4, 2023 by Jack Dempsey. Yes, fishes absolutely need a filter in their tanks. A filter plays a crucial role in maintaining a healthy aquarium environment in several ways: Biological Filtration: This is essential for breaking down toxic ammonia, a byproduct of fish waste and decomposing organic matter.
Our pick for the best small canister filter is the Fluval 107. Whilst it’s a premium filter, and that’s reflected in the price, because it’s external it means it won’t take up any space in your small fish tank. Having said that, at 7.5 x 7.0 x 13.7 inches it’s pretty compact for an external filter too.
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