"Jack" wrote in message
news:F3V7g.4109$zn1.2383@clgrps13...
Hi. Anyone with knowledge of the difference between the filter Hozelock
Bioforce 250 and 500? Are they built completely different ..or is it
just the number of foams inside that distinguishes them apart?

Their website is hardly informative.
http://www.hozelock.com/images/aquat...ceTable_US.jpg
Or
http://tinyurl.com/plc7p

Larger diameter hose? More surface area inside the filter? Larger size
filter?

Why not ask
They'd be able to give you more information.

-S