vetteguy53081
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Update: Woke up to severe bleaching of bird's nest coral(see picture). I think it could be STN/RTN (base had been white for a week or so), low salinity (I'll explain below), or the clown goby (%$#%@~!).
Salinity: I replaced my return pump back in May with Aquatop SWP-480 192GPH after failure of the factory pump (it had granulated carbon in it, maybe it's still okay?). This resulted in a water level increase in the tank. This led to a massive salt creep problem. This led (I think to a decrease in the salinity from 1.025 to 1.023).
Fixed it this morning with some plastic hose(see picture). I upped the water change from 0.5L/day to 1L/day and decreased the ATO refill rate from 0.7L/day to 0.2L/day. Will run it like this for 7 days to get an increase from 0.31 to 0.34ppt using 0.35ppt new salt water.
https://www.wolframalpha.com/input/?i=solve(40*.31+x*.35=40*.34,x)
Any thoughts?
Water parameters are here.
Lights look awefully bright. Birdsnest and most stoney coral do best under heavy blue (75% blue, 20% white) and moderate water flow and salinity at 1.026