I'm new to this. I have what I think is an experiment question. I live close to the beach in Charleston sc. I've been wondering if harvesting beach sand during low tide would benefit my tank. Maybe place in in my sump, also considering a cup or two of sea water? Does anybody know if this would be a beneficial thing.As my tank is not quite 4 months old. I was wondering if it would help with biodiversity. Assistance with a natural biology against pest algae. I'm not sure I'm just intrigued by the idea .