maitenance includes a monthly 25-30% water change with tap water that is treated with kordons amquel+ diet consists of life line herbivore and carnivore ff also flake and occasional brine
I would use RO
water, unless you know your tap water is very pure (some is...most aren't). The lifeline herbivore is still mostly meat, with some green food thrown in for coloring. The fish love it....but it's not that spectacular a food IMO
. Try foods that have green algae as their main ingredient, also feed strips of Nori for the fish to munch on all day long.
sorry for my ignorance but what are HUFAs
Highly Unsaturated Fatty Acids
As for your tank, the UGF
is certainly contributing to some wate rquality issues, how much that is a determining factor in the recovery of your tang...is anyones guess. Is there LR
or base rock in ths tank?