MERRILL COHEN says.... >Raising the temperature to 85 degrees is helpful in getting the >cysts off the fish. I believe that the parasite dies at 85F due to lowered oxygen levels. >and I have found that Maracide has a harmful effect on aquatic plants. Which plants and what effect? To my knowledge, you are the first person to have experienced this. -- Dave Whittaker ac554 at FreeNet_Carleton.CA Gloucester, Ontario dwhitt at magmacom_com Canada