Need help, advice, kick in the.........

[marie]

I think you need better test kits but if the measurement for alk is the same as the hagen testkits then your alk is very low and the calcium is a wee bit high. Buffering will help to bring the up alk levels
Check out these links particularily anything pertaining to the relationship between alk calcium and magnesium
http://www.canreef.com/vbulletin/showthread.php?t=19425