#ed_op#DIV#ed_cl#Hi all, I've got a 50g tank up and running for about 2 months now. The tank has (getting overcrowded, I suspect) a Naso Tang, Clown Trigger, Bursa Trigger, Niger Trigger, a juvenile Emperor angel, blue faced angel, 4 clown fish and other misc small fishes.#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#Up till last week, all the fishes were happily eating, then suddenly, the Clown Trigger and Naso stopped eating (they used to be about the greediest fishes in the tank). The Clown Trigger started getting some white "sendiments" on the body and fins and started hidding plus fading body colour, the Bursa Trigger and Emperor started scratchingtheir bodies on the rocks (but these 2 are still eating well but the colours are slightly fading...). The rest of the fish (except the clowns and damsels) seem to be shy (hiding) and eating much less..#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#I have put in Oodimedik Coral antiseptic solution (from Prodac) in the tank for 2 days now, but so far, there has been no improvement, especially the Clown Trigger.#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#I have checked the pH, SG, NO2, NO3, ammonia and the tank has a very little NO2 and ammonia. The NO3 is higher than it should be at about 20-30ppm. I did get an outbreak of white water 2 weeks ago, which was cured with a combination of UV light, water changes and reduction in feeding. I still do a water change (10-20%) every week.#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#Any ideas on what I should do to save these fishes, esp the Clown Trigger, I suspect it won't last through the week if it still does not eat.#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#Thanks for any advice#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#SH (newbie)#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#/DIV#ed_cl#