HI All,
The tank is 55 gallons, about 2 months old.
I have 2 clowns, a blenny, 4 crabs, firetail shrimp, and 8 snails.
Corals are 1 bird's nest, a hammer, and 1 Zoanthids and 3
Weekly water changes using a white bucket. Water looks OK.
We have a skimmer that is filling with brown liquid, and I...