What size tank are you using it for? I saw it had an 80 gph rating which might be considered high flow for an axolotl on a smaller tank. If you put it on a 40 breeder it would be just fine, on a twenty you might want a spraybar. My filter is supposed to have 220 gph on a 40 breeder, and I cram it with filter media, and have a huge spraybar, and it just works. I'm still thinking about making a better way to slow the current.