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Re: Metal Halide bulbs cost vs. spectrum

>     Is this a competitive price for the high spectrum bulbs?

Yes, we pay about $60 US for them at a hydroponics store in Denver.
They used to be $49.95 but I guess they got "smart".
>      Is it worth the expense to use the 5500Ks?

If you care at all about appearance, definitely.  The 4300K bulbs will
produce a very yellow look to the tank.