the difference between the ebb and gro and the ebb and flo is that "Ebb and Gro" is the name of the product made by CAP that utilizes buckets in an "Ebb and Flo" hydroponic system. Personally, I would run the new Sentinel MEC-1 system. They have bigger fill and drain lines, the buckets are square, 1/2 gallon bigger buckets meaning more root growth potential, digital timer, the buckets drain completely (CAP's Ebb and gro leaves a little water in the bucket to help in between feeding; however without an airstone, problems such as pythium or root rot arose), and last but not least, a bigger hole in your pocket.
Running a system like this is very simple if you would just follow the Lucas Formula; 0-8-16 , Grow Micro Bloom, using
General Hydroponics nutrition without the Grow, 8ml (micro)/gallon, and 16ml (bloom)/gallon. Combined with
hygrozyme 200ml/week, a strong airstone in your reservoir, and you have your entire nutrient schedule planned out from beginning to end. Keeping it simple is always better.