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Greg Richter is an aviation and hydroponics engineer who created the PurGro GroBot Evolution. He contributed this article to Rosebud Magazine to help our readers better make sense of one of the most common types of grow lighting out there. Get the lowdown on HPS grow lights - check it out:

 

Greg Richter is an aviation and hydroponics engineer who created the PurGro Grobot Evolution.

 

Ever want to know what exactly is happening when you test the pH levels in your hydroponic garden? It’s not as complicated as you might think. This new column will seek to explain the science that happens inside your grow room. Ready for a master class?

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