My salinity is 1.022 or 29
PH 8.1
Ammonia is maybe at just .1ppm
Nitrite is 0
Nitrate is 20 ppm which I know is pretty high and not that bad for fish but what should I do to combat it. And temp is 77. I also have two clowns, fire shrimp, cleaner shrimp, peppermint shrimp strawberry crab, and the normal cleaning crew. Also have good filtration system a food protein skimmer and a circulation pump.