Originally Posted by bizoid
i add calcium, magnesium, iodine, pro buffer dkh, kent reactor, microvert, coral-vite, stontium molybdenum, and essential elements. i always check cal & mag before adding. ikeep cal around 400 & mag around 1000. am i overdosing tank & wasting money. i've yet to figure out why nitrate is present . coralife 125 gal skimmer , in-line sump with live rock. i do have 15 fish-- x2 neon gobies, x2 clown, x2 damsels, x2 helsinky firefish, x1 saddleback clown, x1 dragon gobie, x1 domino, x1 purple firefish, x1 lemon peel, x1 flameangel, x1 bangai cardinal
If you have a decent LFS, bring them your water and have it tested for iodine, strontium and molybdenum. Your saltwater mix has essential elements in it. Read the back of your bag and see which ones are there. You are most likely double dosing. Most corals you buy at the store come from the tropics where the temp is always in the 80's. My store has signs all over stating tanks need to be kept at 82 degrees. The nitrate is most likely present from the micro vert.
I don't use any liquid food religiously. If I think about after I do a change, I will throw in a couple of capfuls of Phytoplex in the tank. My corals are all doing nicely and growing. I guess they get the food from the flakes dissolving because I sure don't feed them.
You can also just stop adding any of those for a couple of months and raise the temp up and see if you see any difference.
Take a tank pic now and then later to see any changes.