I live in South Florida and have been growing a hydroponic outside under the Florida sun. I was amazed at how much water plants need. I was pouring 10 gallons a day into my tank. I connected this reverse osmosis unit to an outside faucet (a tank I didn't mention) and connected to a float valve in my tank. Works perfectly! TDS went from 377 to 9! With the float valve, I almost forget to control water and nutrients. Excellent quality and very easy assembly. Comes with an extra set of filters so I probably won't have to buy a replacement for a year.
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