HANNA VS ICP, way different numbers..

[ChrisfromBrick]

I hear you. You think No3 of 9.7 and P04 of .07 are too high? That doesn't seem very high. Maybe the P04 is a bit elevated.

None the less, my tank is healthy in many respects. Sans for the Algae and I would say my SPS colors are more muted in my tank then the pieces were when I first got them.

My intention would be to bring them down. A - to see if it helps the Algae issue, and B - to see if it helps my coral color up and be less muted.

It would be nice to have a reliable number though. Is there a standardized solution or reagent to "calibrate" too?

those numbers are great