Help for the Sponge-Filter Illiterate

[DiscusMark]

I've just added a sponge filter (Hydro IV) to my 55 gallon tank, which also has a Fluval 406 canister. The tank has 6 juvenile discus (3.5"), as well as 8 rummynose tetras and a few cory catfish. Pool filter sand and a few potted plants. All the fish are doing well, and water parameters have been excellent, but I wanted a bit more filtration as a backup.

How large of an air pump do I need for this setup? I've tried a Tetra Whisper 60 as well as a Fluval Q1. Both were terribly loud, and I'd rather not have the sponge filter than have to listen to them.

Would a smaller pump suffice? Or would having a smaller pump negate much of the benefit that the sponge filter should be providing? Any suggestions?

[Ryan925]

Go on Amazon and get an hydrofarm pump. They are super quiet. Great pump and love the large adjustment knob. I imagine that should work well although I don't use sponge filters.

Active Aqua Air Pump, 2 Outlets, 3W, 7.8 L/min https://www.amazon.com/dp/B002TCC46U..._0S-bzbK6HBBG8

[RogueDiscus]

I was glad when I had enough tanks to make buying a piston air pump worthwhile. I hated the vibrator types. I have a local customer who says he uses a power head with his sponge filter. I've never done it so not sure how it works, but might be an idea worth looking into.

[DatDiscusDude]

I've seen the one ryan recommended a lot on here. If you go with a large stronger air pump it should be quiet and strong

[Ryan925]

I've seen the one ryan recommended a lot on here. If you go with a large stronger air pump it should be quiet and strong

I use the two outlet on my tank with a 4" airstone. With cabinet closed I do not hear it at all. I Y both outlets together. The large adjustment knob makes it really nice to adjust to desired flow.

I've tried other pumps and this is by far the quietest.

[DatDiscusDude]

I use the two outlet on my tank with a 4" airstone. With cabinet closed I do not hear it at all. I Y both outlets together. The large adjustment knob makes it really nice to adjust to desired flow.

I've tried other pumps and this is by far the quietest.

I have yet to give that one a go but it is sitting in my amazon save for a rainy day pile and I plan to grab one if and when I need a new pump!

[DiscusMark]

Thanks for the replies, everyone--much appreciated.

[Ryan925]

I have yet to give that one a go but it is sitting in my amazon save for a rainy day pile and I plan to grab one if and when I need a new pump!

For the price you can't beat it.