How fast do parms change?

[geno]

I took some measurements on Saturday and got the following:
pH = 8.4
CA = 420
dKH = 11
Mg = 1320

Assuming I do absolutely nothing -- how long will these numbers remain the same -- or rather how quickly will they likely decline? I'm only doing a 20% WC every other week.

Now that I think about it -- I guess that's a difficult question to answer since you (nor I) know how fast the CA is being used -- duh:doh:

Anyway, I was just curious if anyone had taken the time to measure key parms on a regular (daily) basis. Certainly, I can do that -- just thought I'd ask.

-gene

 

[fish scales2]

Depends on the coral in the system, a system with 3 clams and all acros will deplete ca, mg and dkh much faster than a system with zoas and softies.