This is my first post on this website and I am stuck on a subject I have not been able to find any answers on. I have had my 55 gallon fish/reef aquarium going for about 18 months now. I have currently living is one clown(resides in a bubble tip anemone) and one green damsel. The fish that have perished over the past 2 months are 2 damsels, one yellow tang, and one firefish. All fish were quarantined for 30 days prior to the introduction of the main tank but they have been slowly dying off for no reason and no visible signs of infection. That is except the yellow tang who showed signs of red spots and he was immediately removed. Unfortunately the yellow tang only lasted a week in quarantine and I couldn't save him. These fish started dying off a month after I started introducing RO
water into my tank to get my water quality to a premium. Do I need to add some sort of fish additive to the RO
water? Is the RO
water so clean that it takes some of the basic fish vitamins out. I do add some basic additives for my corrals.