i rinse the sponges and media on my 404s every three months i have two on my 75 so i alternate , there is no need to replace media tho just remember to keep it wet
i rinse the sponges and media on my 404s every three months i have two on my 75 so i alternate , there is no need to replace media tho just remember to keep it wet
I don't see the point of ammonia chips. Biomedia lasts forever and does the same thing.
I haven't changed the sponges on my 404 yet, and I've had it for around 9-10 months. I clean them thoroughly with aquarium water every few months though.