Thank you for ure answer.
I`know that the streight and square pins are the "same", but i`ve seen different bulb manufactures: look here:
http://www.hamiltontechnology.com/sh...lacement+Bulbs or here
http://www.jlaquatics.com/phpstore/s...t_ID=JBJ-LB24A
I thought that somebody can tell me from experience with PC bulbs, and can say me which are the best...