I would just dump it in there and see what it does. If you have problems cycling your tank the best bet is getting some used media from someone in the club. There are many people here that will trade you an old used filter sponge for a new one if you need it. That's how I did it and I was cycled immediately. Don't forget that if you are cycling using no fish, that the bacteria in that bottle will need ammonia to eat. You can get pure ammonia from Ace hardware labeled "janitorial strength ammonia" just make sure that the only ingredients are ammonia and water. Bring your ammonia levels up to about 4ppm but no higher and wait until you can get rid of the 4ppm in 24 hours. Remember that during the cycle the bacteria which convert ammonia to nitrite grow much faster than the ones that convert nitrite to nitrate so it's important to have a kit that tests for nitrite. It may seem like your getting rid of the ammonia at first but nitrates aren't showing up yet, this is the time when those second type of bacteria are trying to get established so keep bringing the ammonia up to 4ish PPM.
