you must be feeding all those tangs a lot of food!
a hungry fish is an angry fish
that's amazing
so many helps to reduce the aggression
They are well fed. Several strips of Nori a day, new life spectrum probiotic pellets in the afternoon and a broadcast feeding of the fish food I made (mysis, cyclopees, fish, mollusks, cepholapod, phytofeast, reef chilli/reef roids and amino acid) a few nights a week.
Fat an happy fish but with 200g+ water volume, pulling half a gallon of chaeto out of the fuge every week and doing 50g water changes every two weeks I am pretty consistently sitting at 10ppm for nitrates.
I had a spare channel on my doser so I started dosing Brightwell Aquatics Phosphate-E (lanthanum chloride) with the output directly in front of my Skimmer intake. 2ml/day keeps my phosphates 0.03-0.05
Most of my cyano is gone, probably from the rotting cat food in the ATO tank, but I have a few little patches left.
Fish are fat and healthy. My tank does have ich even though it went fallow for 10 weeks after Velvet killed almost everything. All the fish have been through qt. I don't know how I got ich in the system but I assume it's from not putting corals in qt before they hit the display. I'll see a spot on one of the tangs once in a while (always the blue tangs) but only once in the last year have I seen more than one spot on the same fish.
I have lost three fish in the last year, a blue chromis who had some kind of intestinal blockage, my leopard wrasse jumped out and my engineer goby stopped looking for food and died.
I don't know if the new probiotic foods really do anything to help the fish. The pellets don't sink worth a crap compared to the old pellets from the same company. I do notice that when the tangs poop now, it comes out as more of a nasty fog instead of solid chunks.