I have just upgraded to an Eheim pro 2324 external filter. I removed all the filter media/sponges from my existing Ecco filter and filled 50% of the new filter with it the remainder of the new filter was filled with new media.
How long should I wait before I can remove the old filter media for the new filter?
Regards Peter
How long should I wait before I can remove the old filter media for the new filter?
Regards Peter