1.98 sq.ft. at 6ASF will require a peak voltage of 13.2V, an applied current of 11.9A, and will produce 157W of heat (peak value). If you used about 5 gallons of electrolyte, a small window fan blowing across the tank will probably keep you out of trouble with cooling.
Don't attempt another anodization until the membership here straightens out all of your problems, we are not finished. Let them get home from work and read your posts.
If you aren't fusion welding the anode connection, its likely that you will drop some voltage there so having 15V available would be shrewd.
If you aren't experienced with building power circuits and have the test equipment, you will be much better off hunting Ebay (or whatever) for a used Constant Current / Constant Voltage (CC/CV) bench power supply. You'll need one that's at least 180W, 0 to 15V, and 0 to 12A. Avoid those that are over 20 years old. Caswell sells a new 20A 30V 600W unit and ships internationally, if you want the easiest route.
The bubbles are hydrogen being produced by the anodization reaction, you'll need some kind of agitation to knock them off of the work, bad things will happen if you don't do this.
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