I could use a sanity check on a few items. I have a 90gal with 90lbs of rock, a dozen snails, a dozen hermits and a few damsels. My tank has been up since the middle of January.\r\n\r\nI have a 6k and actinic in one ballast and a 10k in a separate ballast. I leave the 6k and blue on for 8 hrs and the 10k for 6 (in the middle). Does this sound about right?\r\n\r\nI add 1 capfull (50gal dose) of Kent Marine Essentials and 1 capfull of Kent Coral-Vite each week. Does this sound like an acceptable dose? Do I still need to suppliment Kalkwasser if I intend to keep corals?\r\n\r\nI have a Fluval 404 as a mechanical filter and a Prism Pro protein skimmer. Aside from pros/cons, would I see additional benefit (water clarity/purity) by adding a UV sterilizer or is it just a "nice to have"?