how much epsome salt

[rigleautomotive]

how much epsom or randys mg mix to bring up mag from 1100 to 1350 on 230 gal.my calculations say more than a whole bag of 64 oz.just wanted to double check before i start adding TIA

[Boomer]

You can use this calculator to get how much you need for net gallons of water

Reef chemicals calculator
http://jdieck1.home.comcast.net/chemcalc.html

[rigleautomotive]

is it safe to add that much.i am worried about impurities

[bertoni]

I would move the magnesium level no more than 100 ppm per day. For that big a change, you could consider getting some magnesium chloride to keep the ionic balance a bit better, but Epsom salts should do the trick.

[rigleautomotive]

thanks jon that sounds like the safe way.

[Boomer]

When you plug in values on jd's calculator it tells you what the limit should be / day .