thank you
thanks for the links, the buggers are pretty gross. the tank is in great condition, i added a pagoda which has a lot of space under it so i think it is behaving a bit like an ug filter. the water was changed the other day about 25%.
i am a newbie to the bullitin but not the fish keeping. she is a flowerhorn, several years old in a 46 gallon tank. two claw frogs which she enjoys chasing around. her name is shnubi. her favorite activity is playing with me when i feed her. she likes to go for the pellets one at a time - like a coin toss.
pH is normal, 7.0 and the other parameters are ballanced out. the tank has been cycled for a very long time. i think i may just have to take out the pagoda.