Dutch Bucket Hydroponic System Part 1/3

I'm building a dutch bucket system for about 8 buckets, not sure how many as of yet. This will be used out doors. I'm hoping this exterior mounted recirculating pump will work for me. It says on the pump it .75 amps and 45 watts. I'm thinking it will be plenty of power. If anyone has used a pump simular to this, let me know how it worked out for you.