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best water for growing cannabis

Another factor that needs to be considered is water hardness, which refers to the level of dissolved calcium and magnesium salts. Solutions that contain more than 200 milligrams of these salts per litre are considered hard water, while soft water contains less than this concentration.

Cannabis generally grows best when the pH of its environment is roughly neutral, with a pH of between 6 and 7 being ideal. If the water that cannabis plants are fed falls outside this range then it can inhibit the uptake of certain vital nutrients. Iron, for instance, is less soluble in alkaline solutions, which means that plants may be unable to access this key mineral if the pH of their water is too high.

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Cannabis grows best in soft water, with 100 to 150 milligrams per litre being the ideal range. When hard water is applied to weed plants, the dissolved salts can clog up the roots and prevent them from absorbing water and other nutrients.

Depending on your location, the water that comes out of the tap may also be chlorinated in order to kill of any microbes and make it suitable for drinking. This can be harmful for cannabis, however, so it’s advisable to leave tap water standing for 24 to 48 hours before feeding it to plants, as this will allow for most of the chlorine to evaporate off.

How Water Affects Cannabis

The hardness of tap water also varies, yet it is often too hard for cannabis plants. This may mean that it needs to be purified in order to remove excess salts – something that can be achieved using a reverse osmosis system, carbon filtration or distillation.

Best water for growing cannabis

Tap water is probably one of the most used types of water when it comes to watering cannabis, as it’s definitely the easiest to access. Whether you should use this type of water or not depends on where you live, as the water in certain areas has different characteristics than others. You should be able to check this at the town hall or through town officials Tap water can be hard, (EC + 0.8), medium (EC + 0.4) or soft (EC – 0.4), and it generally has a pH of over 7.0 as well as containing a lot of products that help keep it clear. Tap water also contains lime, chlorine and fluoride in some cases, which can kill natural life in soil and decrease its quality.

Tap Water

In order to use this type of water we highly recommend studying it beforehand and then, if necessary, treating the water or preparing your storage area to avoid bacteria from spreading. If it’s a well that you own, you can empty and treat the surface using ultraviolet light, or you can also treat it with chlorine. If it’s a spring or reservoir or somewhere public, you’ll need to talk to the authorities in the area in order to figure out its contents and take the necessary measures if the water isn’t apt for plants or life in the area.

Well, reservoir, spring water etc.

In order to use river water you should probably live near somewhere where your town hall can assure you that the rivers don’t contain any sort of contamination caused by human kind. If you nonly have access to water that’s in rivers near or in cities, we highly recommend avoiding using it.