Couldn't agree more... and the reason why I've all but eliminated the use of canister filters in my fishroom (I still have an FX5).
I'm a big proponent of frequently changing mechanical filtration media...whether it be the fluff in box filters, the filter foam on sumps/dumps, the filter pads on HOBs, or the filter pads on canisters.
The difficulty is that changing the mechanical filter media in a canister - rinsing FX5 foam...replacing or rinsing filter pads - is a PITA. So people don't do it for months at a time. Out of site; out of mind. Meanwhile, the filter is full of the uneaten food, poop, etc. that most people wouldn't tolerate for a minute on their substrate.
Activated carbon doesn't have anything to do with it.
Matt
I'm a big proponent of frequently changing mechanical filtration media...whether it be the fluff in box filters, the filter foam on sumps/dumps, the filter pads on HOBs, or the filter pads on canisters.
The difficulty is that changing the mechanical filter media in a canister - rinsing FX5 foam...replacing or rinsing filter pads - is a PITA. So people don't do it for months at a time. Out of site; out of mind. Meanwhile, the filter is full of the uneaten food, poop, etc. that most people wouldn't tolerate for a minute on their substrate.
Activated carbon doesn't have anything to do with it.
Matt
Is your canister filter clean?
HITH comes from bad water quality. If you have extremely dirty filters that don't get regular maintenance, they could be contributing to poor water quality. All filters need regular maintenance.
I'd say it's a half-truth, but not because of the type of filter. It's more likely that some people only break their canisters down a few times a year and so they're probably full of sludge and uneaten food.
