so I'm thinking of upgrading my 29g gourami tank to a 55... petco has a $1/gallon sale, and I am taking advantage f it for some of my reptiles, thought I'd do the same for my gourami (sorry, my "o" key sticks). I want to do a heavily planted tank but still want to use my gravel & such for the cycling help. If I wanted t use the substrate that wrks well with plants (can't think of it atm), can I simply place the gravel on top and have it stay that way? or would it mess up the stuff? I don't have the space to have the 29 up and running while I cycle the 55. How "instant" is the instant cycle? I have the water test kit, so I would obviously be doing the tests before moving the fish, but I'm looking for a ball-park to know if I should even bother with it. They are relatively happy in the 29, so I don't have to upgrade, but I like the idea of a bigger tank (we'll see if the wife agrees). Just looking for thoughts. Thanks!!