7 mEq/l can have an adverse affect on certain corals,
SPS for the most part but the easiest way to fix it is add more
Ca. The chem ratio is way out of balance and the addition of
Ca would by default force the
alk down unless your
Mg is too high. Just be sure to add the
Ca slowly and bring the balance back slowly over a day ot two. Once the
alk gets below 6 mEq/l you should be safe allowing the natural fall to do it's thing and just maintain the
Ca level.
Do not try adding acidic forms such as vinegar or soda water. It will have zero affect on the
alk and just play havock with your
ph.
If you are unsure how to go about this, the easiest and surest way would be a few water changes over the next few days. The
alk will come down naturally but might take too long depending on the types of corals and risk involved to the tank.
Be sure once the saltmix is ready you test the levels to be sure it is balanced. No sense going through all that only to have it become worse... 8O
Cheers
Steve
