Filter bags safe?

[Junmity]

Hi,

I have about one thousand of these filterbags....

they are a 3M 5 micron polypropylene filters.

can be seen here.

http://www.esgfiltration.com/pdfs/nominal/PolyesterFeltLiquidFilterBags.pdf

just wondering if these are safe to use in my sump?

if so, i have piles that i'd be willing to part with

[Bblinks]

I don't see why not, just curious if you have the 3M part number for them? I might be interested on getting some.

[Junmity]

Let me try to post a pic of the box id

[Junmity]

3M liquid filter bag

KD0107

P2-PET-F5

CT-0608-7798-3


sorry, couldnt get a pic loaded....

here's what it says on the box. I've been using one for the last couple weeks and just changing it out at the end of the week cause i have heaps....

everything is fine, super clear water....

[Reefer Rob]

5 micron would plug up in a matter of hours.

[Junmity]

ya,

it gets pretty dark at the end of the week.

other than quick replacement, do you think there is anything wrong with going that fine?

[FitoPharmer]

Do these really have a steel ring retainer? That could be an issue if it is not coated in something inert.

[Bblinks]

Thanks for that. I think Rob is right about couple of hours it will be plugged. I was thinking maybe trying out some 50's.

[Junmity]

the ring is covered and stays about 18" above the water line.

i just hook the bag in and let the pvc pipe run down into it.

the ring never comes close to the water.

[jagermaier]

I would be concerned with the fibre free surface treatment...what are they treating it with. Also it wouldn't take long before the salt water creeps up to that steel ring. I would never use one.

[Junmity]

Good point,

is it possible to over filter with 5 microns and starve the tank of nutrients?