blakwidoe
Fish Crazy
I have HOBs on my tanks all biowheels, my question is this....
I know not to touch the Biowheels themselves but what about the gunk that builds up below the wheels where the water dumps out is this safe to clean or is this also beneficial bacteria?
I know not to touch the Biowheels themselves but what about the gunk that builds up below the wheels where the water dumps out is this safe to clean or is this also beneficial bacteria?