Alright, I have been doing some thinking. Let me know what you think, sometimes my thinking too much can be dangerous though.On my 150 gallon right now I have 2 canister filters and a separate pump that pumps through a fluidized sand bed filter and a uv sterilizer. In that tank I have 4 small datnoids 3-4 inches and about a 9 inch silver arowana. Do you think that tank could stand to go without one of the canister filters for a few weeks while I used that one on the quarantine tank. Just an option I thought of don't know if that is a good or bad idea?
Since your fish are small and the are only 5 of them, removing one canister shouldn't be an issue. Especially since you also have a sand bed filter. Water may not be as clean but should have plenty of bb activities in the 150 with one less canister. You should be fine doing it this way

Yep, me too, I have spare bio in bags in a few systems. I also move canters around to new systems as needed. just keep up with your water(testing, changes) and you'll be good.I keep a few extra sponges bubbling in tanks with fish for this specific purpose...
Matt
I haven't read all responses, so sorry if I am repeating what others have already said...
"Cycling a tank" is a bit of a misnomer. If you have established bio media, any tank/filter you put it in will be "cycled" (assuming the water parameters from the established tank are not so different from the quarantine tank that the bacteria die off).
Moving an established filter onto the quarantine tank will give you an instantly "cycled tank." You shouldn't move the filter to the quarantine tank until the fish is added to the quarantine tank. The bacteria growing in the filter will need a food source (ammonia generated by fish) to survive.
If you are using tap water that contains chlorine/chloramines to fill the quarantine tank, be sure to condition to remove/neutralize these chemicals so that they don't kill the bacteria in the established filter you are placing on the tank.
If you have an established tank, you have established bio-media so no need to wait for your tank to "cycle."