I have a ten gallon tank thats been setup for about 6 months. It is planted. I recently received a 20 gallon and I would like to transfer my fish to that. I know you can speed the cycle by putting in gravel (eco-complete in my case) and plants. I don't want to put all my fish in the 20 gallon right away, so I think it is best to leave them in the 10. I'm just wondering, how much water does the 20 gallon need to cycle? I want to only fill it up enough so my plants don't die but are easy to plant and arrange. I also need to move the 20 to the stand that my 10 is on now so I don't want it to be too heavy where it may start to leak. How long do you think it will take to cycle if i put in some eco-complete from my old tank, about 5 plants including anacharis and float my filter floss from the 10?