Salifert Water Readings

[maxalmon]

Ok, finally took the time to sit down and read the directions and here are my readings. I don't really understand the Kh/Alk readings and what they actually mean, anyone care to offer explanations?
.
Tropic Marine Pro salt, 75g tall. Corals=Cabbage, Horn, Bubble, Toadstool, 15Rics, huge fuzzy finger, Frogspawn, Hammer, Fungia, Zenia, clove, flowerpot, starburst, tons of zoo's. BTA, Clown, Hippo, 6Line and fireshrimp
Kh9.4-Alk3.37
P03=0
Ca=390
p04=0
Trate=0
Trite=0
pH=8.2
temp80

 

[dogstar]

Are the readings from the tank or newly mixed before adding? If from the tank then they are IMO, OK. Calcium could be a little higher.
What is the S.G. of the tested water?

 

[maxalmon]

These were taken with tank water. SG is 1.025. I just did a water change and will post new readings.

 

[maxalmon]

New readings for calcium are 425, performed the test twice just to verify. I change my water every 2 weeks, is it possible that my corals will use this much calcium over a 2 week period. (425 to 390)

 

[zanoshanox]

Yes it is, but I dont thinky uo have that problem because you have a large tank and its not loaded with corals...but they definitly use some, just add some about every week instead.

 

[dogstar]

If you have been adding dkH buffer then that would lower the cal. some...