Check the size that matches your tank size. This pump is TOTALLY quiet. I've heard many pumps and I didn't expect it to be completely silent i figured just less noise.
Aqueon Quietflow
Affordable and if you have a smaller tank this amount lasts a long time!
Tetra Aquasafe
I researched quite a bit of heaters. Prices varied drastically and this one came on top in all aspects. I love that it isn't bulky, it has a suction cup, and directions are so simple!
