Is this a reef tank? If so your parameters are off. 50 on Ca++ is pretty poor. Most likely your other parameters like Magnesium and alkalinity are off also. (please post results for them too)i know i know the tank is a bit small and wanted a naso hoping as he got bigger i would put him in a friends 300g but for now my setup 55g dt with 30g fuge, one koralia 2 power head about 50lbs LR and 40lbs LS, and 2x150mh 20k
Po4- 1.0
nitrate- 5.0-10 range
CA- 50ppm
salinity-1.025
ph- 8.0-8.3
temp. 77.0 78.0 f
anything else I'm leaving out?