Freshwater Aquarium MaintenanceFishtank Forum for the discussion of maintenance practices in a Freshwater environment. This includes questions on testing parameters, performing water changes, cleaning algae, replacing substrates, moving tanks, and any other maintenance related tasks for Freshwater aquariums.
There should be plenty of calcium from the tapwater for the snails shell growth. If you are using R/O water you need to be using a product to add trace elements back into the water.