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The main reason is to provide optimum nutrient amounts to your plants, while simultaneously avoiding burning them by overdosing them on nutrients. PPM Relevance to Cannabis Cultivationīy this time, you may be wondering why knowing about ppm is important when growing cannabis. Since the two are so closely related, brief mention must be made about EC. Simply stated, some TDS meter are really EC meters. A PPM meter and a EC meter essentially do the same things.Īs a matter of fact, some TDS meters actually determine the level of electrical conductivity of a water sample and convert the results to parts per million. EC stands for “electrical conductivity.” Using an EC meter measures the electrical conductivity in the water you’re using, and this reading is useful for measuring the amount of dissolved solubles in your water. PPM and ECĪny serious conversation about ppm will also touch on ec it almost seems inevitable since the two are closely related. So, if you use a TDS meter to measure your home’s tap water and your results come back as 200-300 parts per million, it means you have 200-300 parts per million of dissolved minerals in your water, which is in the normal range.
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To determine the level of ppm in your water, you will need a TDS meter (TDS is an acronym for “total dissolved solids”).
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When water gets to several hundred parts per million, it indicates the pipes in your home may be somewhat old and an alternative water source may be beneficial for your cannabis. Most tap water that’s safe for drinking or cannabis use will have ppm in the 200-300 range, which is relatively normal. Testing well water is especially useful because it’s devoid of fluoride and other additives found in most city water to minimize contaminants. If you have your tap water tested for purity, the results will be measured in parts per million.Īnalyzing your tap water will indicate if you would benefit from a water purification system for drinking water. Distilled or reverse-osmosis water are two of the only types of water that eliminated ppm. Parts per million are found in most types of water, from tap water to mountain spring water. One part per million equals 1 mg of solubles for every liter of water.Ĭlearly, this is a very small measurement increment. An acronym for “parts per million,” ppm relates to water solubles, including mineral and other substances, in the cannabis space. So, let’s lift the veil of mystery over what ppm is and how it can relate to growing cannabis. Learning more about ppm will put you at an advantage over beginning cannabis growers who ignore it altogether. While it’s not usually necessary to obsess about ppm and you can grow outstanding cannabis without even knowing what ppm is, it pays to educate yourself about it because it can impact your grow-especially as you advance with your cultivation methods and technique. If you plan to grow cannabis, or even if you already have a few successful grows under your belt, sooner or later you’ll encounter the acronym “ppm”. Understanding Water PPM for Cannabis is a key part that is often missed by new cannabis growers.