How far from the bottom of the Lumenarc to the water's surface?

[Raddogz]

Well, I'm contemplating on upgrading the lighting on my 120g from (2) RO3 pendants to (2) Lumenarcs for better light spread.

How far from the bottom of the Lumenarc to the water's surface is on your tank?

and ... please post what kind of bulbs are you using?

 

[GreshamH]

Most I've seen have been around @ least 8" to the bulb, most are a bit higher though, about 10"-12" to the bulb. The reflector is like 8" deep and if want any type of access with out moving them, 4" or more inches is needed IME.