Filter Media Change

[Robbo25]

How often should i replace my filter media? Its a fluval 3+ if that helps.
Ive heard that one side at a time is best too. is this right?

 

[orange shark]

you should replace half of it every 6 months

 

[Matty P]

One half at a time is best, I have a 2+ for my 17G and I can tell when the media needs cleaned because the floow isn't as strong as usual.

 

[backtotropical]

There is no need to replace it routinely at all. All that acheives is throwing away essential filter bacteria. Only replace it if it is unfit for its purpose, otherwise, you are just wasting your money.

If your media is that old / dirty / worn etc that you think it does need replaced, then yes replace half or less. Wait for about 4-6 weeks then replace some more. Slowly is the key.