yes, the detris/mulm on the surface can be siphoned up while losing a stratum or two long the way. eliminating that which is beneath the surface is normally handled by bacteria. Having the correct type seeded would feed on breaking that down.
Shrimp products from each manufacturer incorporate bacters in multiple product lines for this very purpose. There is a greater dependency on enzymes and bacteria in shrimp tanks than the equivalent fish only as they are less tolerant of water parameter changes.
This of course is a naturally occuring event though time is required. feeding it accelerates the process.
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