Okay, I just received some extra money (thanks Mom) and will set up my 168 gallon tank with 2 FX5's and 1 110 HOB filter.  I am going to cycle my tank with goldfish feeders.  How many should I use and for how long shall I cycle the tank for?  Thanks in advance, The Doctor.

Agreed, you don't need to use fish to do this. I've got a tank set up and cycling as we speak. I'm on week 2 almost starting 3 and the anticipation is awesome! I used a product designed to help with this process. There are many brands and they have tonnes of live necessary bacteria to help you establish the nitrogen cycle without putting live fish at risk. It could be up and running in under a month. There are also methods of adding pure ammonia NOT the one with soap in it! and if you know anyone with an established healthy tank, get them to give you a handful of gravel, put in a nylon sock and keep it wet until you are able to drop the sock in your tank. The fishless cycle will mean less water changes as the ammonia will spike as their waste builds in the filter. During that time you can add new live plants allowing them to get settled and thriving before adding your final selection of fish All the best in your endeavour!

I'm using a local fish stores brand of live liquid bacteria by the name of Big Al's but there are others like Nutrafin Cycle.

Best not to come to a goldfish forum and say you are going to use goldfish to cycle a tank  Especially when you don't have to do it and what would you plan to do with the goldfish when it's cycled?? Also who knows what disease they could bring? Even if you don't care about the goldfish well they could easily bring in disease and kill the fish that are going to live there in the future.