KH and magnesium

[soapy]

Add magnesium? Eventually Alk will come down on its own. Go to the reef chemistry section and read through those threads, Christy has some good stuff in there.


This will help you figure out what you need to add:
http://reef.diesyst.com/chemcalc/chemcalc.html

[fixerupper]

According to this:

http://www.bulkreefsupply.com/reef-calculator

Using Randy's recipe for magnesium you'll need about 242 ml of solution to get your Mg up to 1350 (ish). Many salts have low Mg in the 1100 range so water changes can work against you if you're trying for a higher concentration. Doing water changes with a reef salt that's high in Mg might be less expensive than buying retail Mg supplements to increase levels. Just a thought.

Cheers