metal halide

My lighting period explained

How long is too long?  Is there a peak of the day, and how do you program that?  MH vs LEDs... moonlighting... refugium photo period.  It's all explained in this week's video:

Cleaning the Lumenbright Pendants video

I purchased these pendants in 2008, and they still look great after all these years.  30 minutes every three months seems to be enough maintenance  to keep them in great shape.

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