Unless I buy a temp controlled fridge/freezer with temp set at 32....doing this in a swamp cooler is just not worth my time, effort, and money. It requires WAY too much ice to be continuously added (which adds to the cost....a bag is roughly $2 and if ur gonna crash for over 48hrs, this is about 4 bags/day at least to keep the water down towards low-mid 30's). Honestly, I tried this for first time and got fed up with adding tons of ice so I think the temp only stayed at around 40deg's for most part. I really don't think the beer looked all that much clearer either, am I missing something here? I think I will either t-fer to secondary for clearing vs not do it at all from now on and just have more junk at the bottom of the bottle.