I was under the (mis)impression that plants flowered better with a warm/red light spectrum and that overall MH was about the worst choice with its' cold/blue spectrum - when compared to HPS, CFL or T5's...

In your opinion, if I stick with only MH:
A:> Would a red filter actually accomplish anything toward the color of the light spectrum, and
B:> Do you think this 400wMH produce enough light for an 18sf (3x6) growing area? (I have a small expansion planned for the next crop.)

LED's are real pretty but WAY out of my budget as I'm only growing for personal use.

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BTW.... None of our cats are broken. They've all been fixed.
No kittens are allowed here. 4 cats are 4 too many.