It does sound like ich, so action to set up a hospital tank and treating with copper, hypo, or tank transfer should be done ASAP. I'm not sure what the eye issue is, but it could be a secondary bacterial infection from the ich.
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When ich starts attaching to the eyes of fish frequently the eyes will cloud up from the excess mucus/scar tissue of the parasite borrowing in. Jumping to conclusions/adding antibiotics in a display tank is a bad idea.
Don't spend much time worrying about about it being velvet, they'd be dead already.
hook up that uv yet?
Ich has no impact on inverts. They are fine to stay in the tank. Keep feeding them to keep your bacteria levels stable. You do need to remove the wrasse if he survives.
If you still have some carcasses, run them through FW DIPS to see what falls off. You added a harptail blenny and a sailfin on 2/21. That appears to have upset the applecart, moreover I would suspect something other than ich came in on one of those two fish. That then caused some problems and exploded into a visible ich outbreak.
Just my opinion here, but people always think it is just ich because that is all that they can see, I will continue to believe that ich alone isn't the killer, it is just the most salient visual cue when things go bad. I'm not trying to argue and if anything what I am saying is even more support for QT tanks for new purchases. FWIW, I also consider 'underfeeding' to be a chronic illness (I am not saying in this case in particular). Underfeeding, coupled with some stress can then lead to an ich outbreak and take out your fish. All they 'really had was ich', but the underfeeding was the underlying problem that left them susceptible to ich. Again, my only point is, I don't think ich is the killer people make it out to be, it is just all that can easily be seen and identified. What is it that I have heard, "healthy fish don't die from ich" or something like that. I am free to have this opinion, I know others that have been in the hobby longer than some of us have been alive that use the same rule of thumb....doesn't mean it is right, or wrong. It is very hard to be certain of anything in this hobby.
Sorry for your losses.