Water Test Parameters

[daniel5455]

I did a water test and these are the parameters.

SG - 1.024
Phosphate - 0
Nitrate - 0
Nitrite - 0
Temp - 80 F
Ca - 480mg/L
Alk - 5.0 Meq/l
MG - 1050
Ammonia - 0


I have a 75 gallon Reef tank. Are these parameters good? What can i do to fix them. I also did a water change a week ago. 18 gallon change.

 

[bertoni]

The SG is a little low, IMO. I target 1.026. The alkalinity is fairly high, 4.0 meq/L is a good upper bound, IMO. Mg is a little low, 1275 ppm or so being good. Calcium is a bit high, too. This article goes into all the water parameters we usually measure:

http://www.reefkeeping.com/issues/2004-05/rhf/index.php

 

[mg426]

i agree with bertoni. a rule of thumg is mag 3 times ca. Minimum