I definetly would not use ammo-lock. Your tank just needs to cycle. Just get in the habit of changing the water every day or every other day and add a full dose of beneficial bacteria each time, it should take more than a few weeks. Some filters like my two Fluvals have ammonia removing media but I don't bother, just let it cycle.

What I've personally done to get ammonia under control is two things;
1) limit the amount you feed, or have periods of fasting, for example I didn't feed my fish for around 5 or 6 days.
2) regular water changes, I have been doing 3 water changes a week, so I do a 30% change on Tuesday, Thursday then a 50% change on  a Sunday.

Then it's pretty much a game of patience while you wait for the tank to cycle properly during this time.

Also how big is your tank and how many occupants do you have?

   
Relentless Ammonia....wasn't that a record by the Alan Parsons Project