
This second bulb is also a 1000w, I have no information other than that about it, its the one on top.

Heres another pick with the bulb on the left. Good comparison btw what looks to be the BT37

This bulb may be large, but the EYE bulb which was BT37 worked, decent...and this bulb has a smaller diameter. Check out the comparison of regular MH bulbs

Although the arc in comparison btw the BT37 and the tubular huge bulb, it looks like the tubular has a much bigger arc.
The arc on both of the larger lamps appear to be pretty short, a little larger compared to the T15 in the first picture. The diameter looks to be only slightly larger then the T15 bulbs diameter we currently use.
In fact, in the first picture, take a look at the BT37 bulb to the left, look at its arc length approximately, then go right and look at the big tubular bulb, the arcs appear close in size (if I'm not seeing things....) The EYE bulb is a BT37 shape if I remember correctly.
If the arc is able to fit into the pro triplet, and a good reflector can be used with this, then I think its a keeper.
Let the discussion begin,

Compared to 
