Aqua Clear. I've heard of too many situations where the bio wheel on Marineland products stops turning, and there goes your bio filtration.
Not true. The BIO-wheels turn quickly some times, and slower at others, and can even stop once in a while altogether for a brief period of time. This is common and normal, as per Marineland's website and the instructional information that comes with them. It does not ruin the bio-filtration a single bit. The wheels are still wet, parts are still exposed to air and the water flow still goes through them. Also, bacteria is still on the filter media inside the filter.
Is it true that the Bio wheels never need replacing and is there a noticable difference between a sponge filter and a HOB, What are all you pros using, Canister is it?
thanks
My BIO-wheels are all over 7 years old and still fine.
How long is brief? Over the weekend some time ago the bio wheel on the 72 gallon at the shop stopped spinning. Come Monday it's a white cloudy tank, a couple of smaller dead fish, and the shop owner's son & I scrambling to do a water change to drop the ammo & nitrite level.
A friend of mine who breeds angels went on vacation, and had his brother come by to feed the fish. His brother had no idea that bio wheels are supposed to spin, so when one of them wasn't, he didn't think anything of it. The result was a lot of dead fry, and one of the parents, who were parent raising the angels. These are situations I had to help deal with, I haven't trusted these filters since I tried one in '92, the wheel would stop, not briefly, but permanently, until you gave it a nudge.
James Quarles, a man who has been breeding discus for some 45 years, and has written a couple of books, refers to them in his book "Discus As a Hobby: Everything You Need to Know to Get Started" as a gimmick.
I make it a habit of not believing sales literature, Marineland or otherwise. They all promise the moon, few deliver.