Biowheels - Good or Bad?

mag395

Member
I have a 29 gallon tank that has been cycling for a little over 2 weeks. It will be a FOWLR tank. The hood is an eclipse hood with a built in biowheel. I heard that biowheels are bad so I took it out. My nitrites are still very high >1. I did a 20% water change but the levels are still high. Should I put the biowheel back in?
Any help would be appreciated, thanks.
 

happyvac

Member
Bio-Wheels really aren't necessary as long as you have LR. The only other filtration you should have is some Mechanical/Chemical. You could just stick with it (minus the bio-wheel) for water movement and put some carbon in it now and then.
 

blue00si

Member
Biowheels are a breeding ground for good bateria. I use one and it "helps keep levels normal". I would put in back in.
 

lion_crazz

Active Member
yep, as long as you have about 30-40 lbs. of live rock, you are fine.
If you do not have that much live rock, put the wheel back in.
 

lion_crazz

Active Member
They are definitely not bad, unless you have an abundance of live rock. That is when they become bad, just like bioballs. Some of the good bacteria will die off because you have so much live rock.
 

sleasia

Active Member
bio wheels are fine for small tanks and probably provide adequate surface area for beneficial bacterial growth and also circulation. They are not adequate for large tanks though. I'm using an emperor on my QT and its working fine.
 

hapshot

Member
Originally Posted by lion_crazz
They are definitely not bad, unless you have an abundance of live rock. That is when they become bad, just like bioballs. Some of the good bacteria will die off because you have so much live rock.
Actually, bioballs become bad when you have lots of liverock because porportionally, bioballs have much greater surface area than liverock thus the good bacteria will die off the liverock.
 

sleasia

Active Member
hapshot...I'm not getting how that makes sense. ultimately bacteria will grow on all surfaces and will either multiply or die off to the degree that it is supported by nutrients in the tank , given you are not killing it off with medications, poor water qual etc. Please enlighten me on this bio ball live rock thing because I have both and no nitrites/nitrates
 

uberlink

Active Member
The idea is that the bacteria on the bioballs consume the nutrients from the water that would otherwise be consumed by the bacteria on the LR. The bacteria on the LR therefore starve. Combine that with the fact that bioballls sometimes trap detritus and nitrates, and you have a good reason not to use bioballs if you're using adequate LR.
 

glowplug

Member
I have a biowheel question-- Everytank I have seen with biowheels, 1 or both of them stop spinning, all the time, they take constant monitoring to make sure they are still spinning. That said, wouldnt all the good bacteria die when exposed to just air for more than a few hours?
 

mag395

Member
I have a tank with a biowheel and it has never stopped spinning. Make sure the metal pins are in the right slots. Maybe there is some build up on the wheel or the pins that is stopping it.
 

sleasia

Active Member
Thanks uberlink for explaining this to me. I don't have enough live rock at this point to scrap my bioballs. If I do reef next year I will definately consider this.
 
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