I recently took apart my pump and cleaned the whole thing out, improving the performance of the otherwise clogged up parts. Now that thing absolutely flies, pumping a shit lot more water than it was before. This seems to have created a pretty strong current in the tank though as it's a pretty small one and I've noticed a couple of the little fish struggling a little to swim against the current.
Can a strong current in a fish tank be stressful for the fish living inside it?
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