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fishman 11-02-2006 08:10 AM

Bio wheels
I am running 2 HOB filters on my QT tank and have noticed that the biowheels do not spin as freely as they should. I know once they are in the water for a while they spin irregular, but sometimes they go for a long time without spinning. Any suggestions to improve this? Has anyone else had this problem?

melosu58 11-02-2006 08:15 AM

Try to adjust the water spray bar so it shoots water at top of wheels pushing it around. It`s not supposed to turn fast.

lmw80 11-02-2006 09:07 AM

Also, it's a good idea to rinse out the intake tube. I find that when gunk builds up in the intake it slows down the biowheel even more.

Kurt_Nelson 11-02-2006 11:38 AM

Re: Bio wheels

Originally Posted by fishman
Any suggestions to improve this? Has anyone else had this problem?

From what I can tell on mine (little BioWheel 100 for shifting over to QT only), it's from salt buildup under the biowheel "bearing", pushing the bearing on one side up higher than the other side and causing the wheel to get a little unbalanced.

Every couple weeks, I take out the biowheel and lift out those little purple "bearings" that the biowheel stub shafts drop in to. (At least they're purple on mine!) There's usually a bunch of salt buildup under those bearings that I clean out, as well as the salt on the bearings themselves. Takes about 20 seconds. Pop everything back in and the wheel runs a lot smoother.

fishman 11-03-2006 10:51 PM

I rinsed and cleaned under where the little bearing is and that helped on one of the biowheels but not the other. I think the one that isnt turning is the one that was in my sump for like 3 months. I bet this has something to do with it. Its almost like its to heavy. I wonder if I should replace it with a new one?

11-04-2006 02:01 AM

As long as you are getting flow over them I would not be too worried if it is for a QT.

fishman 11-04-2006 12:48 PM

Well I would think that if its not rotating then its not going to allow the bacteria to live on it?? I have to manually push it along from time to time to get it to spin.

11-04-2006 03:13 PM

Well now you have created interest for me on this topic so I am off to look into it. I have never used a bio-wheel so my opinion is purely speculative.

But, if you were using an Aqua Clear HOB the water flows up through the sponge, carbon, bio-balls or whatever media is there and the bacteria colonizes on the sponge etc.

Does a bio wheel have to be turning for it to collect bacteria? As long as water is flowing through it it will not hold bacteria?

fishman 11-04-2006 03:31 PM

Well I have stripped my HOB down to only have the biowheel running. Reason is I found having the spounge, ect in there creates more problems than what its worth. However once I have a fish in the qt tank I might put one of the carbon/spounge filters in there...dont know yet. I would think you would have to have the biowheel tunring to collect bacteria.

11-04-2006 03:40 PM

Right but why is that? Regular sectioned off media HOB's do not move. Is it a specific design of the b-wheel?

I am sorry if I have gotton off topic here. I never used one and it i nterested me because I was considering buying one for a small QT myself. I am going to do some research.

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