[NATIVEVAMAN]

Arnold,calcium in your tank is a usable commodity.Coral use it,algea uses it,coraline algea use,even snails use it for there shells.If you have coral its only slightly low as it should be about 450 or so.At that your level isnt so bad comming from a fresh salt mix.There are many additives you can safely use to bring those levels up.You may have heard us speak of adding chemicals to the tank that you cant test for as being a bad thing but calcium is not one of them.The 2 part kits seem to be the most popular and can raise your calcium and maintain the ph at the same time.Sit here for a few minutes and you will get loads of personal recomendations.You may want to also test for magnesium.