Ok I searched the forums a bit and couldn't find any threads on this subject.
So on my 55 I run two HOB
filters. An Aqueon and an Aquaclear. Pretty much standard stuff and I'm satisfied with them.
Problem was when I introduced java moss, snails and RCS to my tank. It seems the poor guys were getting constantly sucked into intakes and I would have to rescue them from the filter boxes and tubes. Also pieces of java moss were clogging tubes also.
My solution: PANTYHOSE! lol
Yup cheap nylon pantyhose secured over the intakes by those cheap zip ties works like a charm! The water flows uninterrupted and any heavy particles are easily removed from over the intakes. And my shrimp constantly "graze" over these areas without me worrying about them getting sucked up.
In my opinion a cheap, easy solution to buying expensive sponges at the pet stores.
Hope this helps anyone!