Mercury Vapor OK

i've been using this 175 watt MV security light on my veg room so far so good. it gives off a bluish color.
is this ok or would be getting a 100 watt MH be better.
these are clones at 4 weeks & 2 weeks

Thats all we used to have before they made HPS and MH. The newer lights are way better for your plants as they emit the correct spectrum. MV is the wrong spectrum for great weed, but you can grow good weed with those.

i only use the MV for my veg room the flower room in the back has a 400 watt MH