HALO par38 par test I did
 

Lightboxleds Par38 HALO bulb

Today I've taken the time to visit a local store and have my lights checked. They both have different optics and time usage times.

I'm satisfied with the results but for larger tank just isn't strong enough for deeper tanks as you'll see by the numbers. Still these are perfect for small tanks from nano to a 40g Id say from personal experience.

Bulb is full spectrum 36watts each. The test was done at 9" above water line and measured in an 8" ratios and 16" deep. Both above water and directly below. Numbers were pretty interesting to find out for me and gives a great view on most PAR38 bulbs too.

Thanks and hope this was helpful even with my poor drawing haha.

http://tapatalk.imageshack.com/v2/14...bccf37072b.jpg