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Just to follow up, I've gone with the 250W M80 ballasts and ordered a pair of lumen bright mini pendants for DE bulbs. (They are available, but production is barely keeping up.)
I'll probably spring for the Geisemann bulbs (ouch!), but considering Ushio 14k as well.
What a complex decision. Thanks for all the help and advice.
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His reef is visible from space.
JSM
Current Tank Info: 225g custom display mixed reef, 100g sump/refugium
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