This is really good information! I learned most of it when working with marine aquariums.

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reefkeeer: (ref-ke-per) n: individual obsessed with placing disturbing amounts of
electricity and seawater in close proximity for the purpose of maintaining
live coral reef organisms.
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Almost the same thing can be described for indoor pot farmers.

I did use a 15 amp extension cord to add a 4' lead to my ballast. More than 2 months and no issues, but I'm going to upgrade it ASAP. Any specific recommendations on what to use instead?

Another section that would be awesome would be completely light-proofing cabinets. I had (and to a degree, am still having) problems lightproofing my ClosetMaid (Home Depot) wardrobe.

Thanks for taking the time to write all this down for us newer growers! I don't think you really realize how many plants you've probably saved, and how much you're really helping to "overgrow".