Ok, couple of newbie questions - I’m going to get a bigger tank so I can have a proper school of white skirt and Glofish Tetras (I have a 10 gallon now that just finished cycling) I’m planning on doing a fishless cycle using some of my tank water from my cycled tank and some of the deco from it as well. 1.) How much “old” tank water should I add? And should I do water changes on new tank and use “old” water as replacement water while it’s cycling. The new tank will most likely be a 37 gallon 2.) If I decide to set up 10 gallon as QT tank once everyone is moved to new tank how do I maintain parameters during time when there aren’t any fish? 3.) I have HOB filter - I was told to take out the media and swish around on dirty tank water during water changes so as not to remove beneficial bacteria. I think they mean the removable white cartridge. But then I read that the plastic is where the bacteria is, not the removable white filter cartridge itself. Which is correct??