- Joined
- Nov 14, 2019
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I am setting up a new build, currently with only 4 small fish. Feeding very very little, but still some food ends up in gravel. Told myself, time to order clean up crew to take care of the uneaten food. But that got me thinking. Does a CUC actually do anything in terms of nitrates and phosphates over simply letting food rot in tank. I know CUC useful for algae control, and maybe for "sand bed health", but do they really do anything positive in terms of tank chemistry over just letting bacteria decompose uneaten food?