Hi, kids!

I've been using a biowheel 350 for the past couple of years, and my fish and I are satisfied with the water quality. But it is fairly noisy. I would like to replace it with an affordable HOB of equivalent power and capacity, but without the grindy noise.

I've done a whole half hour of google searching, to no avail, so I turn to my friends, the experts at the aquarium forum. You all are more interesting than google, anyway.

Here's the setup, in case you're wondering: 55g, moderately densely planted; 1 red tail shark, 4 ottos, 3 golden algae eaters, 1 siamese algae eater, 6 turquoise rainbows, 5 dennison barbs, 2 firemouths. Lovely. And noisy.