WC question

[LD50]

Ok I do uber WC's on my FW tanks but as we all know SW is not nearly as cheap. I have not done a WC on my 125 in over a week so I tested the water and the spec's came out perfict.

0 PO4
0-5pmm NO3
420ppm Ca
8.5 Kh
8.2 Ph

So would a WC really be nessicary for anything more than to replentish trace elements? Say a 10%?

 

[jworth]

good question. Look forward to hearing the answer

 

[FLESHY]

Yes, or no h2o change, and merely supplement. The thing about this is that it is hard to test for, and dose for all the essential nutrients that go into a complete saltwater.