I have a newt in a 5.5g tank. Lately if I look very closely I can see what seems to insect in the water. They are so small I can't even describe them. About the size of 1 grain of talk! I tried looking at one with a poor quality microscope I bought for my daughter but it moves so fast that it just passes by the lense in a blurrrrrrrrr. Has anyone seen them! Any idea what they can be! I did some reaserch and found nothing.