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midgetwaiter is right that the Ushio SE is the best choice. It runs the most efficient on an HQI ballast, and puts out the most PAR. The Ushio 10K is rather yellow though, so you may need to use stronger actinics to pull the color nicer. I think you will be happier with the SE on HQI than with your current DEs, as I understand you only have 2 MH over a 6 foot tank. The coverage the SEs with have will be quite noticable in your case. You need to check out this website: http://www.reeflightinginfo.arvixe.com/ You will find that the 250w Ushio 10K run on a PFO HQI ballast has the highest PAR in the 250w range. The reason why I will never own a bowfront!!! The best bet is to pick a smaller pendant. Try the Lumenarc mini. BUT, (generally) the smaller the reflector, the less spread of light you will get. Honestly, you would be best off getting a third pendant and using the Lumenarc minis. Then you will have space for your VHO. Last edited by Myka; 08-04-2008 at 05:17 PM. |