I use:
"Marine environment salt Marine Environment® dual phase formulaâ"žÂ¢ is a two part, limited production, high purity superior marine salt. It compensates for impurities being rendered useless. Part #1 Marine Environment® consistently contains major elements with moderately elevated amounts of calcium. Minor elements with consistently enhanced amounts of strontium, lithium, molybdenum and manganese.
Marine Environment® also contains the 62 trace elements found in other salts, at concentrations similar to NSW. However, this product does not rely on these impurities to stay in solution long enough to be of benefit to captive marine pets.
Part #2 Marine Environment® with the "little bottle, that makes the big difference"â"žÂ¢ makes important differences in the working ability of this product vs. all others.
marine environment little bottle The "little bottle"â"žÂ¢ contains bromide as a carrier for essential trace elements. These trace elements are scientifically bound to stay in solution until they are metabolized by the captive organisms on display. These bound trace elements cannot be removed by simple aeration, filtration or skimming.
The "little bottle"â"žÂ¢ also contains various water conditioners and stress and shock reducers. The "little bottle"â"žÂ¢ with these Marine Environment® Supplementsâ"žÂ¢ contains additives or supplements that are usually purchased separately."
here is one place I found that sells it online:
http://www.northcoastmarines.com/salt_mixes.htm