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Ahead of the Maximum Yield Conference in Long Beach this weekend, Grow More has released what they consider to be the "ultimate" feeding schedule for aeroponics and hydroponics: Hydrogarden Feed Chart

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Lumens are a measurement of luminous flux – the amount of light perceived by the human eye. Since light bulbs were originally manufactured for human vision alone it became the standard of measure for bulbs. It is still very important in architectural design and in civil building codes. Most...

Hi, My name is Richard, I'm also known as Hermitian Operator or just plain Hermitian elsewhere on the internet. The name refers to a mathematical object which came up occasionally in my career as an applied mathematician. I started using this name because a Hermitian Operator is something...