Hydor koralia wave pump

[Rita]

Hey all,

 

I bought this wave pump from the co op for my 20 gal long and it does a great job circulating the water, but I’m afraid it does too good of a job. My poor ember tetras were swimming in one spot against the current constantly while I tested it today. Is there any way to stifle the flow a little bit?

[FrozenFins]

I would wrap a sponge over the intake and see if that helps.

[Streetwise]

I started in the planted tank hobby with some spare gear from my marine days. I tried using a few of of those and they were just too powerful. Maybe you could save them for a circular-flow Hillstream Loach tank. Your Ember Tetras would prefer the flow of a Nano Sponge Filter or two.

Edited January 17, 2021 by Streetwise

[ScottieB]

52 minutes ago, Streetwise said:

I started in the planted tank hobby with some spare gear from my marine days. I tried using a few of of those and they were just too powerful. Maybe you could save them for a circular-flow Hillstream Loach tank. Your Ember Tetras would prefer the flow of a Nano Sponge Filter or two.

Yeah, this!

Thats a great power head but that flow is way too much for them. An air driven sponge filter would make them much happier. I use that that same pump in a 20long saltwater coral frag tank with no fish in it. 

[Lemon]

maybe have it be at the top or pointing at one of the sides 

[Lemon]

well pointing it at the top didn't work to well in my 10 gallon danio tank 

[kwyjibo]

i also have found the 240 to be pretty overkill in a 20 tall.

i am considering cutting out a restrictior plate out of a pringles lid or some such.

He anybody else found a good way to slow these down?