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Off The Water
Watering Hole
hydroponics
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<blockquote data-quote="sunshine" data-source="post: 406417" data-attributes="member: 20527"><p>The ppm you're referring to is the unit for the total dissolved solids in your nutrient solution, ppm can also be expressed as mg/l . It it a rough gauge of the amount of nutrients available for your plants to uptake from the solution. Too high, the plant will lock up. Too low, you'll see deficiencies. It's not practical for folks to determine the actual levels of the individual compounds, nitrogens, etc so the conductivity/TDS is used for process control.</p><p></p><p>This is a good chart for pairing up different plants and getting a good starting point as far as pH and nutrient levels.</p><p></p><p><a href="https://www.homehydrosystems.com/ph_tds_ppm/ph_vegetables_page.html" target="_blank">https://www.homehydrosystems.com/ph_tds_ppm/ph_vegetables_page.html</a></p></blockquote><p></p>
[QUOTE="sunshine, post: 406417, member: 20527"] The ppm you're referring to is the unit for the total dissolved solids in your nutrient solution, ppm can also be expressed as mg/l . It it a rough gauge of the amount of nutrients available for your plants to uptake from the solution. Too high, the plant will lock up. Too low, you'll see deficiencies. It's not practical for folks to determine the actual levels of the individual compounds, nitrogens, etc so the conductivity/TDS is used for process control. This is a good chart for pairing up different plants and getting a good starting point as far as pH and nutrient levels. [url]https://www.homehydrosystems.com/ph_tds_ppm/ph_vegetables_page.html[/url] [/QUOTE]
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