how much light needed

ok, how much light would i need to flower 2 plants in a 5 gallon bubble bucket system? i am going to go with ppp as my sttrain. i will veg with a eight bulb t-5 setup. I would like to flower with hps. what size could i get by with, without going broke?

Seeing as bubble bucket plants can get huge I'm say 400 watt.

www.HTGSupply.com

...or a 250 watt if you don't supercrop or canopy them.

Depends on how big they get when you veg them. A 250w would probably be fine

you need a minimum of 50 watts or 3000 lumens per square ft of your grow space, everything else is relative

im going to vg them for 5 weeks,