additives Help

[reefermadness]

Alkalinity, calcium, magnesium.

Those 3 are the only important additivies you NEED. And they are listed in the order of importance (based on the quanity your tanks inhabitants will consume and thus needs to be replaced).

If you are running a FOWLR you may not need to dose anything.

[scar_11]

thanks I am running a reef tank

[mark]

your salt mix is to have the remaining trace elements so another reason to kept up with the water changes.

[Myka]

How many corals do you have? If your tank is only moderately filled with corals then a good water change schedule will be enough to keep the levels up. However, most salt mixes need to be supplemented with calcium, alkalinity, and/or magnesium BEFORE you use the freshly mixed saltwater.

Personally, I don't like to use Seachem for calcium supplements as they use calcium gluconate in some of their products. You want calcium carbonate only. For smaller tanks Kent Turbo Calcium is a great product.

Take a peek at the link in my signature for information on supplementing. It lists a bunch of good products that I have had success with.