It will usually present itself as a calcium deficiency, but the low levels of phosphorus will have an impact on your plant’s yield. This reaction often occurs when a grower is unknowingly using hard water. Any tap water over 350 PPM should only use Hard Water Micro without Calnesium.īy far the most common problem we see is when growers have too much Phosphorus or Calcium and a reaction happens which locks out their availability. At levels between 200 and 300 PPM it is advisable to use Hard Water Micro, together with Calnesium, to balance out Calcium levels. In most cases, problems in water quality arise from higher rates of Calcium (although it’s advisable to do a water test to be certain), and using regular Holland Secret Micro will push Calcium levels too high which increase the chances of having a lockout with the Phosphorus contained in Holland Secret Grow and Bloom.įor those who do not want to spend money on a lab test, it is advisable to monitor water quality using a nutrient meter. Unfortunately, this is not an option for everyone and some are forced to grow using water with a high mineral content. To obtain optimum results, it is recommended to use water that contains as little salts as possible. Water quality is a big concern when growing hydroponically. Micro Hard Water is recommended for use with water over 200 PPM. Micro Hard Water contains less calcium to balance out the high levels of calcium present in your hard water. If your PPMs are around the 200-350 range, we recommend continuing to use your tap water but combine it with Holland Secret Micro Hard Water. Reverse osmosis is generally considered to be a safe soft water to use in growing. Too much salts can cause tip burn, stunted growth, and can inhibit seeds and seedlings. It is generally not recommended to water your plants with softened water because of the high levels of sodium present. Softened water will maintain a high pH and will have a high salt index. You can soften hard water through a reverse osmosis system, certain filters, ion exchange, or chelation systems. At Future Harvest we recommend using our Micro Hard Water when your PPM is over 200.
Some growers consider any water with a PPM of 100 or higher to be hard water. A GPG is equal to 17.1 PPM.Īnything over 120 SI (3.5 GPG) is considered hard water and anything over 180 SI (10.5 GPG) is considered very hard. Cannabis growers will be more familiar with PPM (parts per million). In the US hard water is often measured in GPG (grains per gallon) or in Canada as SI (milligrams per liter). Generally, hard water will be high in pH while soft water is low in pH. PH can be a good indication of if you have hard or soft water. How does pH play into hard versus soft water? You can check the GPG index of your city's water HERE The top Canadian cities with hard water are: We recommend religiously testing your PPMs as calcium and salts can still build up. ⠀ Some cities may soften the water before it is available in your tap. If you live in Saskatchewan or Manitoba, we recommend testing your water. Additionally, it is very common in the Prairies to have hard water. If you live in Ontario, you may want to check your city's water and consider using our Hard Water Micro. In Canada, Ontario has over 85 cities with water over 15 GPG. States like Utah and Idaho have very hard water. Mountain states will generally have harder water. Water testing in the United States revealed over half of America has hard water. Hard water is very common in Europe, especially in the UK. Growing cannabis with hard water can be a challenge because the excess calcium can lockout your roots, preventing them from properly absorbing essential nutrients. While hard water poses no health concerns, it can be a hurdle for most gardeners and growers. ⠀ Geographic location can impact if your water is hard or soft. Soft water is generally considered to be more desirable, especially for growing however, soft water can sometimes have a high sodium content. Soft water is the opposite and will have low levels of calcium and magnesium.
Any water with a PPM over 200 can be considered hard water. Hard water is classified by the high levels of calcium and magnesium present, but there can be other minerals in the water as well. “Hard Water” is water that contains a high mineral content. Do you have hard water? Do you not even know what soft water versus hard water actually means? We're here to help!
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