When to Modify pH and PPM Throughout a Hashish Develop

When do pH and PPM need to be adjusted during cannabis growth?

When to Adjust the pH and PPM During a Cannabis Grow: If you are new to cannabis cultivation, it is normal to assume that lighting is the most important aspect of any cannabis cultivation. Or maybe you think it’s climatic conditions like temperature and humidity. Then factors such as nutrients, ventilation and soil also need to be considered.

While each of these things are important to hearty, healthy plants, there are two more things that you should never overlook: pH and PPM. Too often, growers don’t even consider the pH scale or take PPM measurements, and even when they monitor these things, many of them don’t know when is the right time to make adjustments.

This is exactly what is covered here in this guide to help you know when to adjust pH and PPM during a cannabis growing operation.

The importance of pH and PPM factors

To better understand when to make these adjustments to environmental factors like pH and PPM, you first need to have a basic understanding of why these factors are important in the first place.

Why focus on pH?

For pH, which indicates how acidic or basic a solution is, it all depends on how well the crop handles nutrients. Cannabis plants prefer their environment – we’re talking about the soil – to be slightly acidic, between 6 and 7.

If your pH reads more than 7 and less than 6 when you test the soil, then the root systems are having trouble drinking nutrients that are given off with each watering. In other words, the plants will have difficulty eating. To keep it simple, think of it as the temperature of the foods you eat.

If the food is too hot you will burn your mouth and tongue and it will not feel good going downstairs. Too cold and you will end up experiencing things like brain freezing and teeth sensitivity. Just right and the food comes down a lot easier. It is the same with pH.

Why focus on PPM?

PPM, short for parts per million, is a measure of the total amount of dissolved solids (TDS for short) in the water that you give your plants. To be honest, PPM is nowhere near as important as pH and is more of an advanced concept that new growers don’t necessarily need to worry about.

However, by measuring PPM you know exactly how many minerals and substances there are in the feed water, and adjustments can massively improve the quality of the plants.

To give you a better idea of ​​this measurement and how it works, most tap water falls in the 200 to 400 ppm range. This means that there are between 200 and 400 milligrams of soluble substances per liter of water.

Many growers prefer to start with purified water with a PPM of 0 and then add their nutrients and fertilizers as they measure the PPM. This way they know exactly what is in the water without having to worry about feeding their plants the contaminants that are common in tap water.

3 reasons to adjust pH and PPM

Before using a pH pen or PPM meter to make your adjustments, you need to know when to do so. Here are the top three reasons for changes in pH and PPM:

  1. The pH is greater than 7

    As mentioned earlier, cannabis plants thrive in a slightly acidic environment. Ideally, the soil pH of each plant stays between 6 and 7, but the only time you really need to worry about too much alkalinity is when the soil runoff is pH 7 or higher.

    In environments that are too alkaline (pH 7+), the root systems begin to struggle with the process of absorbing and processing nutrients. Remember, you can think of the food as being too hot.

  2. The pH is below 6

    Just as too high a pH is a problem, so is too low a pH. When this happens, you can imagine that your food is too cold to tolerate.

    If the pH drops below 6 (from 5.5 for bottomless hydroponic growth) the same thing happens as if the pH rises too much. The soil becomes an intolerable environment for the roots to take in nutrients, which ultimately means the plants are not getting the nutrition they need.

  3. The harvest shows signs of nutrient deficiency

    There are many things that can cause nutrient deficiencies in a culture. It could be the result of a pH that is too high or too low, but it could also have something to do with water PPM.

    If the water you are harvesting has too much “stuff” and the PPM is extremely high, it can mean you are overdoing it with fertilizers and nutrients. It could also mean that the water you are using is not suitable for growing. This means it’s time to use purified water or invest in an RO system.

    If the PPM is too low, it could mean you are not getting enough nutrients to the plants. Either way, it’s always a good idea to check the PPM of the water when mixing in fertilizers and before watering the crop.

Note that these are only the top three reasons to adjust and that you may encounter other minor issues that changing the PPM and pH can fix. You should monitor and maintain pH and PPM throughout your growth, not just when you run into problems. Focus on pH first, then you can pay attention to PPM.

Monitor and adjust pH and PPM

The easiest way to make adjustments is to use the right tools. Invest in a pH pen and a PPM meter – there are even some tools that work as an all-in-one pH PPM reader, and some measure even more things like electrical conductivity (EC) and temperature.

Related videos on when to adjust pH and PPM during a cannabis grow:

Don’t make this mistake when adjusting the ph of plant nutrients …

Cannabis PPM & EC [EXPLAINED]

Why is TDS / PPM important for growing connoisseur quality cannabis? Jake Grentree

Parts per million (PPM) for cannabis plants!

When do pH and PPM need to be adjusted during cannabis growth?

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