01-11-2013, 08:15 PM
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Originally Posted by DKRST
No, more flow through a filter is better! The bacteria that do the vast majority of waste breakdown are aerobic, not anaerobic.
The changes in ammonia/nitrate/nitrite readings won't be detectable between the inflow and outflow.
Planted tanks may cycle "easier" since plants will help remove the nitrates/ammonia form the water.
I'm assuming you are using a canister? Regardless, most any typical aquarium filter is going to gradually, bacterially over time slowly break down waste. A filter is not an all-in-one sewage treatment plant where pristine water comes out one end of the system after a single pass through.
I was referring to cycling my aquaripure nitrate filters. Both my tanks are are fully cycled in regards to ammonia and nitrites. The aquaripure has a very slow drip rate for anaerobic bacteria to process nitrates. Too much flow can increase the oxygen level and kill the anaerobic bacteria in, though too low will likely kill the bacteria from nothing to eat. At least that was my understanding.