10,000K/Actinic lighting

I am running 10K XM 175 Watt. The tank is running since February and growth is decent. However, the MH have only been on around 4 hrs per day due to the high temps. The growth is OK, I thought it would be more. However, I have only had my clams around 4 weeks.
 
I'm running 2 XM 10K 150w DE bulbs with 2 96w actinics now after trying a bunch of brands and different Kelvin ratings. I plan on sticking with this setup for growth and appearance for a long time. I'd only consider a change if I alter my lighting fixture. If I made the change it would probably include the lumenarc reflectors and maybe 250w MH

Oh, I and have SPS and clams too.
 
Bilko, are you talking about PC lighting or MH? There would be a difference in overall wattage which would make a hugh difference (PC doesn't even go above a 130w)
 
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