UP UP AND GUPPY said:
Well the lady at petsmart said that live plants dont do anything for reducing ammonia or nitrites or anything, they are just for show. Is that false or not because I heard differently. And if I can add a plant then can I add a microsword to help with the cycling?
Well, that's one Petsmart employee whose word I wouldn't take for gospel. Plants will indeed consume ammonia, nitrites, and nitrates in a planted tank - that is why people can add fish immediately to a heavily planted tank without the fish experiencing any harm...and also why ammonia/nitrite spikes are much lower in moderately planted tanks during cycling.
Some believe that live plants only consume nitrates...that is not correct either. The problem is that once beneficial bacteria are established in the tank, then the bacteria and plants compete for ammonia and nitrites. The bacteria don't consume nitrates though, so all the nitrates are left for the plants.
You could add a microsword to help with cycling, but it's mostly fast-growing stem plants that have a noticeable effect on cycling. Any plants will help, but some help more than others.
Plants will consume CO2 and produce O2, but at night that changes and plants consume O2. That is why some people that inject CO2 run an airstone at night, so that there will be more gas exchange at the surface - to avoid the fish people suffocated by the lack of O2 at night, since the plants are also consuming O2.
jumpfreak pretty much covered the plans for proceeding. Counter to what the Petsmart person said, there's no need to do scheduled water changes if you're doing a fishless cycle.
Good luck!