hi i have like white furry stuff growing on my log in my fish tank do you no what it would be? thankyou
What size tank do you have? How many fish are in it?
The white fuzz your talking about is a fungus/bacteria that grows off of excess nutrients in the water. A major cause of this is over-feeding your fish.
You can try using a gravel Vaccuum to suck some of it out, and change a portion of the water. This will help short term to remove it.
How long has your tank been setup?
I had this stuff while my tank was cycling for the first 3 weeks after my tank started to near the end of the cycle almost all the white fuzz went away.
Whatever the white fuzz I had was my guppy liked to eat it so I tried not to suck it all out. But I did try to get some of to clean up the tank.