Got my new bulbs, measuered PAR (Since the PAR meter wasnt picked up this week) before i replaced 4 of the bulbs and after i replaced them. theres was a 60-70 par upgrade at all levels of the tank. i only replaced bulbs 1&6 on both sides, 4*blue plus. i have to replace 8 more bulbs and will do so over the next several days. 4 more on sunday, and 4 more on tuesday.:bigsmile::bigsmile: