I have a basic 3 compartment sump tank filtering my 160g tank. 1st area for sponges, coarse and fine for mechanical. 2nd area for bio balls, ceramic rings for biological and 3rd area where i've got my pump, heaters and also a bag of crushed coral to help me with a low ph problem i used to have.
I'm aware of the need to periodically wash my sponges out in tank water, which i do. However, I've also been told that my biological filtering media also requires a rinse out though maybe only once a year. This scares me a little, hence this post. I believe that the biological compartment of any sump is basically the engine of the tank, mess with it and your water parameters will go ballistic so don't touch it. Am i right or is it indeed safe to mess with the biological side of your set up?
I'm aware of the need to periodically wash my sponges out in tank water, which i do. However, I've also been told that my biological filtering media also requires a rinse out though maybe only once a year. This scares me a little, hence this post. I believe that the biological compartment of any sump is basically the engine of the tank, mess with it and your water parameters will go ballistic so don't touch it. Am i right or is it indeed safe to mess with the biological side of your set up?