Originally Posted by ElitePhoto
tangs are in the same tank. tanks been with fish for 2 months now and cycled for about 6 weeks prior to that...so a little over 3 months now. what I use to test water is a dip strip... nitrate 20, nitrite 0, kh above 300,ph 8. water is fluxiates between 79-80 degrees. my powder brown has the most of this sand looking stuff on him i would say like 50% of his body, my yellow tang has NONE the blue tang has very very little as does my blonde naso, he also has very little, maybe 10 % of his body. ive had the blue and yellow as my first fish in the tank, the powder brown i put in about 3 weeks ago and the blonde naso abotu a week ago. All my tangs came from the same LFS
There's numerous factors to your problem. First of all, your tank is wayyy too young yet still to put all those tangs in there!!! Second, you need to ditch that test strip stuff, it's not very accurate! Third, if the tank they're in is a 72 gallon tank, you'll have a big problem sometime soon. You really need to do some major research before advancing any further. I would suggest in feeding garlic treated foods right now to boost their immune system. Try to take back at least 2 of your tangs and be willing to upgrade your tank down the road. Good Luck! :happyfish