My snails and my emerald are dying in my 55 gal tank. Fish, rock anemone and small zoo is great?

Water test are great, had a local supplier test ,also came out as amonia 0, nitrate 0, ph 8.3-8.4. I am reastablishing my tank after moving to a new location!!! (Bad experience, lost corrals and fish) Brown alge is gone and going back to pink, purple and red alge within the first month. Added one domino damsel and one very small yellow tang along with 4 nasarious snails, 2 turbos, 4 scarlet hermit since the new set up. Skimer and filtrations is good, but I have been trying to boost color by increasing the kalwer drip, iodine, and strontium & molybdenum mix. Only feeding once a day, 4.7 watts lighting a gal, canaster + wet dry. What is killing my small inverts????? Prior to moving the snails were breding like crazy, I use to give several away a month. I havent tested calcium or for copper, my sal is 1.024. I also srubbed my 60 lbs of live rock with kent marine rock scrub prior to placing it in my tank.