I have a tank that is cycled and would like to set up a second tank. Can I use the water I drain off my cycled tank each week to help the 2nd tank cycle quicker? Also where do the bacteria hang out? Are they just free floating in the tank or attatched to the sides? What is the most water you could change out and not hurt your bacteria count? Lots and Lots of questons. LoL Thank you for any help.