Sump question

[andy1985]

Hi i have a large sump under my tank, i have a glass trickle tower and thinking putting in my spare chamber in my sump.
My question is i know not to put the glass on glass, what should i put inbetween the base of the trickle tower and sump?

eggcrate?

 

[celebrist]

A lot of people use light diffuser, also known as egg crate, for various in tank applications