GYOscience: adjusting pH for growing marijuana.

Oct 07, 16 GYOscience: adjusting pH for growing marijuana.

The pH level plays a really key role in achieving the correct balance of nutrients for a cannabis plant. The good news for those keen on growing marijuana is that it’s really easy to adjust the pH level of the water – and it actually takes less than five minutes!

Remember your school science class? Can you recall the basic principles of testing pH levels using litmus paper to determine whether a substance is acid, alkali, or neutral? Well, that knowledge certainly comes in handy when it comes to growing marijuana of the very highest quality. Interested? Then read on…
To recap for those messing around at the back of the class, the pH scale runs from 1 – 14. On the scale, 7 is neutral; below that is acid, and above is alkali. Cannabis plants naturally like the soil to be slightly acidic (most agree that a pH of 5.8 is optimum) around their roots. This environment helps them to properly absorb the nutrients they need, because nutrients take on different forms dependent on the pH levels around them. Therefore, getting the pH level right is a bit like giving the plant a nutrient supplement – only it’s much easier. Essentially, it helps the plant to get all the nutrients it requires, all the time. This is important while growing marijuana, but particularly so for gardeners who are using liquid cannabis nutrients which are perfectly formulated but only absorbable by the plant within the correct pH range.
Of course, there are exceptions to the rule and it’s possible to grow excellent cannabis without managing the pH levels at all. Occasionally, as luck would have it, the soil naturally achieves the perfect level of acidity without any input needed from the gardener. Unfortunately, though, most cannabis cultivators aren’t so fortunate.
Measuring the pH level of the water is really simply and can be done using easily-available drops or strips. There are also digital kits on the market. The important thing to remember is that the pH level doesn’t have to be exact, but it’s important to keep it in the correct range of slight acidity. It doesn’t matter if it creeps up or drops down a little during the grow cycle as long as it doesn’t stray too high or too low.
If the pH level is spot-on, then happy days! If not, then it’s really easy to put right. A very popular method is to use a solution called ‘pH Up’ or ‘pH Down’. The bottles are designed in such a way that it’s simple to see how much of the product should be added. If liquid nutrients are being used, these should always be added to the water prior to pH testing because they can change the acid or alkali levels of the water. Once the solution has been added, gardeners should re-test and repeat until optimum conditions for growing marijuana are achieved.
Who would have thought that such a small change could make such a big difference? Well, the simplest ideas are sometimes the best – and the great thing about this one is that it really works.
Put your knowledge to the test and check out our amazing range at GYO Seedbank today.

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