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The main reason people say this is because they repeat the mantra on this site that they are Nitrate factories”. I’ve been using the Bio-Wheel for years and have never had a [acronym:4391bf05cf="Nitrate"]no3[/acronym:4391bf05cf] problem. (I have the HOT & 350)
Most of these people that recommend taking them off have never used them personally and if they had they would realize that the main culprit of [acronym:4391bf05cf="Nitrate"]no3[/acronym:4391bf05cf] is overstocking/overfeeding. Bio-Wheels don’t produce [acronym:4391bf05cf="Nitrate"]no3[/acronym:4391bf05cf] out of thin air and as long as you don’t contribute excess [acronym:4391bf05cf="Ammonia"]nh3[/acronym:4391bf05cf]/[acronym:4391bf05cf="Nitrite"]no2[/acronym:4391bf05cf] to your system you won’t see excess [acronym:4391bf05cf="Nitrate"]no3[/acronym:4391bf05cf].
With all that said 1.5+ [acronym:4391bf05cf="Live rock"]lr[/acronym:4391bf05cf] per [acronym:4391bf05cf="Gallon"]gal[/acronym:4391bf05cf] is still be best thing to use for biological filtration. If you don’t have any [acronym:4391bf05cf="Live rock"]lr[/acronym:4391bf05cf] than you have to have some kind of filtration so keep the wheels. If you do have enough [acronym:4391bf05cf="Live rock"]lr[/acronym:4391bf05cf] then it’s up to you whether or not to keep them on.
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