HELP! After adding my live sand, live rock and 3 mangroves my salinity dropped. This morning when I checked my salinity of my 40 gallon tank, it was finally at 1.023, which was perfect for my fish and live rock tank. I went to my LFS and got roughly 30 lbs of live rocks, 10 lbs of dry rock, 1 large conch shell along with 3 red mangroves and 60 lbs of live sand. After adding everything to my tank, i let everything settle down. Just now when i checked my salinity again, it had dropped to 1.010. Is this normal? Do i just add more salt or do I have to take everything out? Do I cycle with the salinity being lower than what i need?