@Megability this will be a very good option for Apex probes once Adaptive Reef fixes the problem. This particular model won't fit the Apex temperature probe since it is a different diameter. However the manufacturer, Adaptive Reef, is now working on that problem.
Personally I avoid the return chamber for probes because that is where I dose my additives into and that would skew readings if the probes read the water parameters with much increased concentrations. As the additives leave the return chamber into the display tank they are mixed with display tank water and "diluted" by a higher volume of water. When the tank water gets back to the skimmer chamber the additive concentration is normalized.
Now it looks like we have a solution to the microbubbles of the skimmer in the skimmer chamber. Enter the SPS Kit by Vivid Creative Aquatics. (Salinity Probe Stability Kit).
vividcreativeaquatics.com