HELP! I am very new to saltwater (2 months now) so all of this is helpful to me...
I have a 75 gallon acrylic tank with trickle filter, charcoal, and protein skimmer...
It houses 2 clown fish, 1 lemon damsel, 1 yellow tang, 1 longnose butterfly, and 1 hermit crab.
All fish had been doing...