Rena Canister Filter Users - how often to change the filters

[Atl300zx]

This question is for people with canister filters, more specifically Rena Canister filters.

How often to you change the filters? i have just been rinsing them out in tank water since i have owned it, but i think the time might be here to replace them.....

Side info: Rena XP3 on 55 Gallon

TIA

[rich311k]

I replace the fine sponges every couple of months. The courser sponges I use until they fall apart.

[Atl300zx]

good info, then i will replace the fine, and leave the others for a bit longer.

[TwoHobbies]

I use filter floss in mine, and replace it every month. I haven't replaced either set of sponges yet and it's been 15 months.

[theotheragentm]

Originally Posted by TwoHobbies

I use filter floss in mine, and replace it every month. I haven't replaced either set of sponges yet and it's been 15 months.

Ditto. My sponges don't seem to clog up with filter floss in the mix.

[Cliffz]

Folks,
My top filter pad get clogged every few months. Which tray do you put the filter floss and how often do you change the filter floss? I have course sponge tray, medium sponge tray, top tray with bio chem zorb, ceramic rings, topped with a filter pad. The top filter pad gets clogged reducing water flow. thanks

[TwoHobbies]

In my XP2 I have, starting at the bottom. Course sponge, fine sponge, filter floss, ceramic rings. I change 30-50% water each week and if the return rate is weak from the spray bar at that time I replace the floss. Usually once every 4-8 weeks.

You only need about a 1" layer. If you pack it to tight if will greatly reduce the flow from the filter.

[Cliffz]

Two Hobbies,
thanks!!! Sounds like a plan!!!

[gheitman]

I've used my xP1 for over two years now and the 20ppi and 30ppi filter pads are as good as when they were first purchased. I clean my Filstar the first week of each month and rinse them out in tank water and replace the micro-filtration pad.