20g tall

i have a 20 gallon tall tank with gravel in it. (getting heater and filter soon) can i start cycling it now.? if so how do i do it. aslo do i need an air bubble thing? (fresh water tank)

Hey guys figured I'd start up a thread here to show everyone how things go with my two new rams so far everything seems good. I introduced them to my tank yesterday and they're being active, they've found most of the caverns in the tank and stay near the bottom portion of the tank. I think they...