i understand what your saying now ,your so broke you have to stay with the light you already have .i apologize for upsetting you. i'v been there and feel the pain brother.my first indoor grow consisted of ten 8' t12's salvaged from a garbage pile and mounted on plywood.i had to sell most of the harvest to pay the overdue elc bill. may the fore wind blow something good your way.when/if you get a chance to upgrade may i point out that a four bulb t8 fixture will use LESS electricity than a four bulb t12 fixture while giving you more light?. :hippy: