Hi All,

I have had a 20 gal. tank going for years. I now would like to add my 10 gal. It has been along time since I have cycled a tank.
I am wondering if it is possible to take half my 20 gal tank water and put it in the 10 gal and add new water as needed. Then take the old filter from the 20 gal tank and put in 10 gal. Would this make it cycle quicker or is there something else I need to do? Also how long does the cycling take? Thanks.