I'm in the process of collecting everything I need to start my Ca reactor running on my 210 SPS/LPS reef. The last thing I need to get is the pH probe to connect to my Neptune AC3. I've been reading the different reviews from various websites about different probes and I've come to the conclusion that the safest choice is the Neptune Lab-grade probe. I looked at the BRS probes and I've seen reviews that described a probe that either doesn't work with their Apex or one that loses calibration after 3 months. Just wondering who here uses the Neptune Lab-grade probe and what you think of it?

