Howdy, anyone use a GPH Flow Meter and had success with it? Supposedly you are to put it inline with your canister filter to test GPH. If the GPH gets low it is time for maintenance. Would be nice to take the guess work out of it. And for only $5.99 it's not an expensive way to tell either.
http://www.drsfostersmith.com/product/prod_display.cfm?c=3578+4393+14681&pcatid=14681
http://www.drsfostersmith.com/product/prod_display.cfm?c=3578+4393+14681&pcatid=14681
