Hello all,
This week I added an ORP probe to my tank. Been having some weird issues so I added an ORP probe hoping it might provide some clues. My question is why does GHL use the 225mv calibration fluid? According to @Randy Holmes-Farley most aquarium authors recommend a value of 300-450 (http://www.reefkeeping.com/issues/2003-12/rhf/feature/index.php). In addition, all other ORP probes that I've seen use a calibration fluid closer to the values recommended by Holmes-Farley (400mv).
Can you tell me why GHL recommends 225? Is there any harm in calibrating my probe with 400 solution?
At the end of the day I don't think it matters tremendously as I'm just trying to correlate incidents in my tank that make it rise or drop, but I am very curious.
Thanks,
Ben
This week I added an ORP probe to my tank. Been having some weird issues so I added an ORP probe hoping it might provide some clues. My question is why does GHL use the 225mv calibration fluid? According to @Randy Holmes-Farley most aquarium authors recommend a value of 300-450 (http://www.reefkeeping.com/issues/2003-12/rhf/feature/index.php). In addition, all other ORP probes that I've seen use a calibration fluid closer to the values recommended by Holmes-Farley (400mv).
Can you tell me why GHL recommends 225? Is there any harm in calibrating my probe with 400 solution?
At the end of the day I don't think it matters tremendously as I'm just trying to correlate incidents in my tank that make it rise or drop, but I am very curious.
Thanks,
Ben