Ms will have more blue light, which works great for indica but not so much for sativa due to the stretch it creates. Great bulb if u can get ya paws on em

Jack og said:

Ms will have more blue light, which works great for indica but not so much for sativa due to the stretch it creates. Great bulb if u can get ya paws on em

Click to expand...

I was always under the impression that the MS contained more red than a normal M1000. They are pretty easily found, and the price is 1/3 of what I used to pay in the mid 80s. The arc tube has an unusual shape for a MH, but maybe that is how they coax the extra bandwidth or something. I used one the last cycle for flowering along with a HPS, and the results were good, especially the Sativas, but they are almost always my biggest yielders due to their tall frame...but you can't grow it well in a tent. With 7 ft ceilings it is still tricky. Thank you for the input
*** UPDATE *****
I spent some time looking at ANY information I could find online regarding the spectrum, color, dimensions...all of the tech info. The only differences that I could find was:
The MS1000 had a few more lumens, an average of about 2000
MS had a very slightly longer discharge tube
MS was base down only
M1000 was universal burn' So...according to the specs, there isn't much difference, although the specs didn't include the base up version of the ms1000. For some reason, and I know that there are spectrum differences, information on the differences between these two bulbs are like hen's teeth. I might have to contact Sylvania directly at this point!

This pdf says M designates standard metalarc bulbs and MS position designated.

Also says there are many versions of both in a wide range of wattages.


https://media.distributordatasoluti..._-_Metal_Halide_Specification_Guide_64034.pdf