01-23-2020, 10:46 PM
Join Date: Jan 2018
Location: Slovakia, Europe
| | Re: Refugiums
I don't have any experience with refugiums, but:
- shrimp/snails don't clean water directly, they help in removing uneaten food in the main tank, so having them in refugium most probably won't do anything and you even might need to feed them separately
- clams should be good filter feeders and might help keeping water clean, but as far as I know, many have parasitic larval stadium which attach to fish gills. In closed ecosystem it might present serious health hazard.
- the only use case for refugium which I see is to have healthy plants which would otherwise get eaten/damaged by fish (African cichlids come to mind - they destroy almost anything green in the tank). This would definitely have its benefits with next to no disatvantages.