clowns dying?

sinaloa213

Active Member
i have 2 true percs in a 20 gallon with one powerhead.
i noticed for three days now the fish just swim in the top corner of the tank and like to stay put next to the return flow.
is this normal?
amonia:0
trites:0
trates:0
ph:8.4
salinity:1.023
i dont have any corals but plan to get some these next fey days here are some pics
hope they help
https://www.saltwaterfish.com/vb/showthread.php?t=231176
 
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