Oh yeah_ almost forgot_ WARNING_if you decide to use dry ice to get your water temp down to freezing then be prepared_it gets pretty exciting when you pour the water into the bucket!_everything will start "steaming" and massive amounts of CO2 will result_like some mad scientist at work, everything will start bubbling and popping, its quite a show while it lasts but using the dry ice to keep the water temp as low as possible enables the trichomes to break away and settle to the bottom faster. Less chlorophyll gets dissolved in the water so your product will be gold/blonde in color and very potent. I'm now a big fan and will make some of this from every future grow. The system I use is pretty affordable_ 3 bubble bags, three 5 gallon buckets, a paint stirrer for a hand drill (get the long ones), ice and dry ice if you want to try that.Check out the tutorial on making bubble hash. Cheers to all.