Ok, then my salinity is good. I'm hoping the radiant wrasse comes out soon with a heavy appetite for pests. It's disappointing because it will be 2 years with the same tank in a month, without any coral pest issues. In listening to a youtube post from tidal gardens it seems pests are the rule rather than the exception. It's likely that as I accumulated more and more coral they snuck in on a frag. I only recently started treating frags prior to putting them in the DT. Eventually I will use my 13.5 as a quarantine once I upgrade my DT.
On a side note what does RTN mean?
Thanks again all for your input/feedback. I never get used to how helpful folks are on here.