Timfish
Crusty Old Salt
FWIW The 90 gallon I posted in my first post (#8) has been getting tapwater for about 11 years now. It's been years since I checked but TDS of tapwater has always been 300 - 400. The biggest problem with keep a wide range of corals until about 4 years ago was the SInularia foliata colonies which was probably roughly 80% of the coral biomass. Once it was reduced to less than a fourth the range of species that thrive has increased significantly.
