Need MH Bulb Info ASAP

[TorturedSoul]

A person has bulb to put in MH fixture. Needs lumen & spectrum info to determine size of box (square feet). Bulb is new/unused but the person does not have box, came out of plant's stores.

Here is everything printed on bulb:
PHILLIPS
400WR
M59/S
USA [triangle with point pointing down with a vertical line "cutting it in half"] M5 - 1 [might be M5.1]
[circle with Hg (mercury) inside it]
MH400/U

Need information ASAP as the person does not wish to construct a space that is too large for this light - in fact, the person was heard to mutter to themself that they are so poor that they hope they will be able to beg/buy enough materials to contruct the space ONCE. The person will be using an old-school magnetic ballast ("low, low hours") and will be forced to use this fixture/bulb for both veg and flowering. So the person realizes that it is VERY important not to construct the space with too much area as the person will be painting the walls flat white for reflection (not titanium white, just "regular" white).

Oh, and the person said to say, "Thanks very much in advance for helping with such an important step at such a crucial time."

The person might even have muttered something about doing all this to supply persons with medical needs in a non-medical state for free.

I, of course, wouldn't know the person, anything about the person, or anything about any of this. I just heard them muttering such things at a McDonalds. Or was that a Wendy's...

 

[McBudz]

I would say that would be good for 3.5 x 3.5 foot space.

 

[TorturedSoul]

Hmm... 12¼ square feet? That's about 50% more than someone once had a 430 watt Son Agro HPS illuminating lol. Maybe they could have gone with a bigger setup back then?

Looks like the person is thinking the space will be slightly rectangular but the square-footage will of course be the same regardless of the actual shape.

Someone did do some searching with Google and thought that the bulb in question might output 36000 lumens (initial, best-case scenario) and have a color temperature of 4000K. But someone was not sure as someone was unable to find an actual part number on the bulb.

If someone was correct, wonder if the 4000K color temperature would need to be taken into account when figuring square footage.

Someone doesn't know and doesn't want to grow skimpy plants but also doesn't want to "waste" light due to having a space with no CO2 addition that might have been bigger.

Uhh... you know.

 

[TorturedSoul]

Someone was heard muttering in a Taco Bell (or was that a Jack in the Box?) that the 400 watt MH, after being plugged in and allowed to operate for 30 minutes, wasn't anywhere near as bright as their old 430 watt HPS was, let alone the 1000 watters (although that last was to be expected lol). As the bulb is brand new, someone wonders if this is normal for such a bulb in an "outdoor" fixture or if the ballast (or something) has degraded since it is 20 years old - although with VERY low hours since the person that had owned it realized the first month that it was annoying the neighbors that were a couple of hundred feet away, and in fact the ballast is pretty quiet for an old non-electronic type.

Someone also muttered that if anyone had ANY doubts about MH bulbs spitting out the UB rays, they can just stop wondering as someone laid their eyeglasses down two feet from the fixture and went back two minutes later and the thing had activated the glasses' uv-sensitive tint (even with the fixture's glass shield installed).