Quote:
Originally Posted by angelo
Salt and minerals are important for biological functions. In freshwater, the concentration is much higher within the fish’s body than surrounding water. With the understanding of the process of diffusion, the salt and minerals will move out and water will move into the body. The excretory system must get rid excess water and retain salt and minerals. On average, Freshwater fish has bigger kidney and urine more as compare to saltwater fish of the same size.
Question 1: Removing fish feces will prevent NH3 and NH4 build-up?
Question 2: Guppy needs salt?
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Let me try.
1. Removing fish faeces do not prevent ammonia from building up as fish urine too. NH3 and NH4 build up only when nitrogen cycle kick in. without a working filter, you have only ammonia and no NH3 and NH4.
2. Don't know whether the guppy needs extra salt from us or not, at least not from me. They took what was naturally available in the water and I thought they were doing fine.