My tank is still new and all water perimeters are fine nitrates 0 nitrite 0 no amonia ph and alk little high 14dkh and cal 450 lowered my salinity to 23 from 25 with fresh water to try and reduce my alk but for some reason my rpe seem to be melting could i have to much light or parasite i had a few nudi but after plenty of dipping havent had a problem besides i thought they left palys alone my ppe are below and are great any ideas?Thanks