What led fixture did you chose..... is it equivalent of my 48" T5 with 3 10000K AND 3 actinics ??Tbh I got sick of buying replacments and picked up a LED system. Best place for cheap bulbs is ebay at least thats where I got them for 7+ years. If you do decide like i did to upgrade you cant "cheap out" you will spend $800 easy. Theirs no point in buying cheap LED cause they wont do the job.