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400W MH flood light fixture. Need bulb replacement input! Thread Tools
Old 02-17-2017, 08:33 PM #1
Drop That Sound
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400W MH flood light fixture. Need bulb replacement input!


Here it is, suitable for wet/damp locations, I believe with pulse start? and an M59 bulb socket.

I have had it for awhile and used it once several years ago, bolted to the wall inside a garage.. slightly tilted up, and vegged some beautiful looking starts, and it's been sitting ever since.

I would like to have it as a supplemental\backup light\seasonal extra flowering fixture.. and wondering what bulbs would work best for mostly flowering? I heard the 4000Ks work good but unsure if I should use anything but the recommended bulb in this type of fixture. It does get pretty warm, but I want it too right now!

It's completely sealed but I could take the glass off if need be, or even add intake and exhaust flanges I suppose. I also wanna drill out and add some eye bolts so it can also hang from the top. I like that I could spray without hurting it though so rather leave sealed.

I have no idea the age of the bulb that's in it or even itself. Probably around 10 years, other than that it looks pretty standard and has a 400MH/U USA-8M-1 printed on the side of it.

Been wanting to try an all MH test run on my current strain, and also use it between my two 1000 HPS's to add a better spectrum with UVs to my flower room, when not in use otherwise.

Figure I can use it in my spare 3.5x3.5 multi purpose veg/flower/drying room right now over a little 2 plant coco scrog . Flip flopped to run during HPS lights out, instead of running a heater(s) for the rest of winter/spring, with no need to exhaust outside.. except back through my main work area and to the flower room, helping to keep it warmer, so I can kick my radiant oil heater down to the lowest setting. Might as well flower plants instead of waste heat right

Anyone have any suggestions on a decent bulb for the job, or use these fixtures to bloom before?
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Old 02-17-2017, 09:46 PM #2
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Ok so I am re-studying MH (been using t-5s for awhile now) and M59 is probe start.

Basically I can install any m59 (says ONLY M59) bulb and be alright then? What about m59/s and m59/e, etc? Got me all confused. I just want a cheap but decent 4000k bulb that will fire and last.
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Old 02-19-2017, 04:19 AM #3
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I'm not sure what the letter after m59 mean, but I think it'll be fine as long as the ANIC number starts with M59. And if not, hopefully someone will step in with an answer?
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Old 02-20-2017, 05:41 AM #4
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Finally found a few bulbs with just M59 code

https://www.1000bulbs.com/product/88147/PX-MS400.html this plantmax should work good, amazon reviews suck for it though, the digi version anyway which I don't need. Also says 10,000 hour life while most are twice that..

https://www.1000bulbs.com/product/63...FdiXfgodxT0MoAand there is this bulb I found, it states that it is a m59 under the specs (comparison with the other bulbs), but m59/e at the top of the page.. this is the one I want, but having both m59 and m59/e on the same page is what it really confusing me..
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Old 02-20-2017, 05:51 AM #5
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ok just found this thread https://www.icmag.com/ic/showthread.php?t=148612

m59/e just means it needs an enclosed fixture, which is what I have.

Quote:
Originally Posted by Balance View Post
Hi BP,

Light bulbs come with a letter designating what type fixture it needs to go in.
O = Open light fixture
E = Enclosed light fixture
S = Must be in Enclosed fixture unless vertical.

What this means is the O bulbs have more glass and can withstand explosion or mishap. Get these, yes they cost more.
The E and S bulbs need a light fixture to contain the quartz or hot glass in a mishap.

http://www.gelighting.com/na/busines...s/2008_hid.pdf

Page 10, General Information:Fixture Requirements

If your light fixture is completely enclosed and sealed, Yes.
Now hear is the thing that gets me, the eiko bulb has some "CRI" number that states it is 70, while all the comparison bulbs on 1000bulbs page listed as m59/e say CRI: 65..

What does CRI mean I wonder..?
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Old 02-20-2017, 05:57 AM #6
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OK, it stand for color rendering index, blah blah blah..

Do I want the CRI 70 or 65?

I think i'm way over thinking this all lol, but I am going to first try flowering with my flood light fixture so I want the best bulb that will work.
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Old 02-20-2017, 07:36 AM #7
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You can purchase a Philips bulb at your local home depot.
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