FILTER MEDIA

[fishhouse]

Hi

Can you guys give me the following info please


Should i put bio balls at bottom then filter wool on top?

or bio balls at top & filter wool on bottom?


anything else i should add to my box filter or external filter then bio balls & filter wool?

Thankyou

[ILLUSN]

filter wool is fine mech filtration, it clogs up fast and so i put it up the top where i can replace it regularly and eaisly.