Actually after reading the reference guide I imagine the ANSI code is probably M57. Hey on the link its got a column called Ballast Type (i.g Pulse, Probe, HQI and MV/MH) Have any idea what it really means? Like what’s a Probe ballast type? Sorry all new to this.
Also looking for your opinions, thoughts & experiences on the following bulbs:
Coralife 175W 10,000K
Hamilton 175W 10,000K
Venture 175 10, 000K
XM (never heard of on list ) 175 10, 000K
Also curious as to where everyone buys their bulbs from?

I'm so excited about lights I can't work!
