Ballast and bulbs

[pbienkiewicz]

My reef lighting has two 150w HQI MH bulbs and four 54w T5's. I thought I ordered two 150w 15k XM bulbs. After looking at the box they were 250w HQI MH bulbs. Do I dare use them or not?

 

[pbienkiewicz]

Nevermind. I need to learn how to read.