New Filter

[blackops]

im getting a new filter and taking the old one out do I need to cycle the filter or is it okay to just go straight in

 

[fluttermoth]

The best thing to do would be take all the media from your current, cycled filter and add that to the new one, then top it up with new media to fill the rest of the space (assuming the new filter is larger).

You could run both filters in tandem for a while (at least six weeks) but you may not get any bacteria growing in the new filter as the bacteria don't move around, and presumably your current filter is dealing with all the ammonia, so there wouldn't be any extra to feed a new colony.

You might find that when you remove the old filter, the new one won't have sufficient bacteria to deal with the bioload, so moving the media is the best way to do it.

 

[blackops]

I am moving over form the juwel internal filter to a fluval u4 is the media ok to ues from the juwel or should I ask my local ma for some

 

[fluttermoth]

It might be tricky to fit the media into the U4, but you need to, or you'll lose all your good bacteria and have an uncycled tank

You can always chop it up.