Ya nitrates should be below 80 or at the most 80 then do a water change. Welcome to the high maintenance needs of rays. Nitrates are high meaning water changes need to happen. The Ph swing can say your Bio or filtration might not be good enough for the setup. What media in your filters. Here is my test from my ray tank.
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Nitrates were between 120 and 180 And ph fell from 7.8 to 6.5
I'm running 2 Fx5 s. And theres only 2 leo pups in there
New test kit a must!
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