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At some point you will need some sort of mechanical filter. Could you see my tank after three decades if I diden't periodically remove solids?
THose solids will remain there, or degrade if not removed.
I have a RUGF which is a course mechanical filter and it has always been in there.
As was said, I also occasionally use a diatom filter which cleans out the rock and generally stirs up everything, removing cyanobacteria, algae spores, "some" paracites and any other tiny matter that I want to rid myself of anyway.
Have a great day.
Paul
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