Melosu58
Reef enthusiast
I would not use Tap IMO. It is not good for your tank. Some tap water is better than others but that does not mean you should use it. IMO this is a big problem in your tank. I work for a water municipality so I know what they add to water. Things like nitrates and phosphates and silicates. Ammonia and bleach. Good for Human consumption but bad for aquariums esp. reefs. Read this article
Chemistry and the Aquarium
Chemistry and the Aquarium