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Re: Freshwater or Marine?
Thanks for the info and references - I'll be sure to take a look at these.
Just another question - in reading about marine reef aquariums, I have come across information that recommends a deep sand bed as a natural way to remove nitrates from the system (especially as corals do not tolerate nitrates very well). It is bed of sand at least 10cm deep in which the water is poorly oxygenated thereby allowing anaerobic bacteria to grow, and these bacteria convert nitrate to nitrogen. However, other information I have come across advocates a minimal sand bed, as it suggests that sand can harbour debris which can not only be toxic to the aquarium but also be a potential source of infection.
What are your thoughts on this?
Also should the sand bed be cleaned during the regular maintainance of the aquarium, or would this destroy the balance of anaerobic bacteria in the substrate?
Thanks again
Elvip
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