5 Gallon Tank Is the current to high for them?

[ToOthleSS04]

Hello, I have a 5 gallon tank filled with guppy fries. I've changed the filter yesterday (Fluval u3), cause the one I had wasn't very efficient... Now, the water is clean, but the guppies seem exhausted. They have their tiny fins pointing forward like an arrow and to rest they go to the bottom. Shall I take out the new filter?

 

[carsonsgjs]

Thats a very big filter for a 5 gallon tank. I’d also worry about them being sucked into it. A sponge filter will be fine for a tank that size, coupled with regular water changes.

 

[Jordanlp]

A small sponge filter would seem much better option IMO. It will use less power to run a sponge filter off a small air pump then the Fluval U3, and not only will the current on that filter be too strong and likely stress guppy fry (even on the lowest setting as I recall there is a gentle flow setting) but I’d also say it would be a lot safer using a sponge filter as the fry could get sucked into the side intakes on your current filter.