I have just ordered a Rena xp2 for my 46 gallon planted tank. It's been up and running only for a couple of weeks. I have an emperor 280 on it right now, which I added some of those bio star things in the extra media basket because I knew eventually I would be changing filters.
So my question is, when I install the xp2, can I just put the star things in there and remove the emperor? Or should I keep them both running? If so how long?
I hope this isn't a dumb question.
Thanks for any help!