wow bro fruitbat, i think you're right...my water pH is quite low..think ammonia lvl getting high despite the fact i introduce coral chips to raise it's pH. as for temp, i tot s'pore temp is usually around 27-28 degree celsius so i din on my heater cos my tank only 2 feet...keke...
I kept these pair of bichirs for 4-5 yrs and one is 9'' while the other is 11'' only as i avoid feeding live food as much as possible, yet they still suffer under their own ****s... -.-''
I used to have 1 more bichir along these pair which died of the same illness...tt's why i am very paranoid now...sigh...
Primafix sounds familiar anyway...but i am using oceanfree--Super Internal disease away for these infected pair, while my temp is raised to 30 degrees...