Calcium should be 400 - 480, phosphorous 0.
Don't forget to check alk 8 - 12 dkh. Very important as alk and ca work together.
There's a great article on this over at www.wetwebmedia.com that explains alk and ca.
Good luck!
*jumpfrog..
thankyou....I have always tested my water with the normal kits..including nitrite,nitrate,ammonia,pH...but am purchasing the calcium, phosphorous, and now alk...kits..so thankyou for your help.