Filters

[fishywishywowoo]

When I set up my tank filter the company advice was to change the white cotton part every week, think the blue every month and the green every 2 month but would this not get rid of the bacteria? Should I just swish in old siphoned tank water? How often to actually replace. Thanks

Sent from my GT-I9505 using Aquarium Advice mobile app

 

[Delapool]

Cotton wool I mostly replace every filter clean. The plastic foam I never replace - it just lasts for ages and doesn't need replacing. Plus could lose some bacteria as you mention depending on filter setup.

Edit - yes just swish in old tank water to clean.

 

[J1Time]

Remember companies don't always provide best advice. Endgame for them is making more money, telling you to never change parts of the media is bad business advice.