The Planted Tank Forum - View Single Post - Biological Filtration Survey
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post #2 of (permalink) Old 10-20-2020, 12:00 AM
Grobbins48
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I feel there will be many schools of thought on this one...

How many fish are in this tank now?

No matter what, if you remove all the bio media and rely on the sand alone, you will see ammonia spikes. Frequent testing and water changes will be necessary. If in the long run the sand can maintain the tank is the key question.

In the filters the water is forced through the bio media. This allows for the BB to work. Although you have a deeper bed of sand, you will not get nearly the same flow through the sand.

It is possible to run with no filter media, yes, but I would not stock heavy!



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