Is this normal runoff pH

My pH going in is 6.5 pH coming out 5.7 is this normal

No. I would do a soil slurry test to check the actual root zone

What the hell is that

lol u crack me up lmao

You take about 2 Oz of soil and add some water. Allow it to set for an hour or so stirring occasionally and then you read the pH and ppm levels.


No it isn’t here read this I hope it helps. Also this should help also…I know it’s a lot but you need to know and understand P H or your just wasting your time.

pH in Soil

When growing marijuana in soil you are less likely to run into pH problems, especially if you are using especially mixed soils that feed the plant throughout its life, without having to add any liquid nutrients. It is said that the soil acts as a buffer, this means that it helps slow the change of pH values as opposed to hydro systems where changes in pH take effect much more quickly.

Marijuana in Soil

It helps to look at how marijuana grows outdoors in its natural environment.

The pH of rainwater is normally somewhere around 5.5 – 6.0. Of course, this can vary a lot from place to place, and even from time to time. In nature, when it rains the soil becomes more acidic, freeing up some of the nutrients that were previously unavailable. The plant gradually sucks up these nutrients, wicking the moisture out of the soil and consequently raising the pH. During this time the plant has access to a whole range of nutrients and minerals that were locked up in the soil.
•The same thing happens when you grow marijuana in soil in containers. When you add water the pH of the soil changes and the whole range of nutrients become available to your plant as the soil slowly dries out again;
•This means that some nutrients that are otherwise dormant in the soil become available when it is wet.

Water your soil grown plants with clean, uncontaminated water with a pH of around 6.0 to 6.8.

Watering Weed

Of most concern is the pH of your root zone, as this is where all the nutrient action takes place. A more useful way to gauge what is actually going on in the soil is to test the pH of your run-off rather than the pH of the water you put in. The run-off will contain any salts that might be building up in the soil and alert you to possible problems before they occur.

The addition of Dolomite Lime to soils at about 1 – 2 tablespoons per gallon of soil is a good way to help control the pH of overly acidic soils.

It is worth mentioning that using rainwater for growing marijuana is a controversial subject. It creates problems for some growers whilst others use nothing else. pH values can vary wildly from place to place, and some locations have high levels of pollution. If you are going to use rainwater, be sure to measure its pH before you do.
•If you are using tap water, let it sit in a bucket or reservoir for a few days to allow it to dechlorinate, then check the pH to make sure it is within the required range.

It is always worth considering a reverse osmosis water filter (RO) to make sure your water is free from any contaminants. However, you should note that the almost pure water provided by RO machines has no natural pH buffer at all and its pH levels can swing up or down with ease.

The perfect PH value for a cannabis plant

In the world of gardening, pH both affects and is affected by everything.
Indeed, the entire process of growing plants is a study in the physical dance of pH balance.
The plant itself has a pH identity, with some plants being more acidic and others more alkaline,
the water of different regions has a pH identity that is determined by a variety of environmental
factors, and the soil of various regions also has a pH identity.

So, how does the gardener master this dance of acid/alkaline polarity to bring forth a bountiful crop?
The first step is gaining a basic understanding of pH, the needs of the particular crop,
and the tools at hand to provide the optimum environment for that plant to prosper.

The perfect PH value for a cannabis plant

While the physics of pH can indeed be complicated, they don’t have to be. When preparing
to grow the cannabis plant, it can comfort the grower to remember that cannabis is a hearty
herb that has historically been considered a weed in horticultural circles. The cannabis
plant wants to live, and will do its best to do so.

The pH scale runs from 1 to 11, with lower numbers being acidic and higher numbers being alkaline.
The cannabis plant prefers a pH environment of 5.5 to 6.5. When the pH environment rises in
alkalinity above 7.5, the roots are not able to consume the available iron, copper, zinc, manganese,
and boron ions in their vicinity, and when the pH lowers into acidity to less than 6 the roots
are not able to access phosphoric acid, calcium, and magnesium because they lose their solubility.
If the pH drops to between 5 to 3 with temperatures above 26 degrees Celsius fungal diseases become
a threat to the plant.


Savvy gardeners know that the success of their crop always starts with the condition of their soil.
Sandy soils are acidic in nature, clay soils are alkaline. Woodland soil usually falls right in the
middle, and is referred to as loam.

One should remember, however, that since woodland soil is created by the process of decay of leaves,
bark, and other organic debris, the top soil that is involved in this process will tend towards
acidity. It is always best to conduct a simple pH test to determine the identity of the soil, and
one’s water as well.

the perfect soil mix for a cannabis plant

Growers of cannabis have praised the results of growing their crops in sandy loam soil, as the sand
encourages good drainage and allows the roots to easily grow, while the loamy soil is rich in
nutrients and holds water.

Gardens with inherent clay soils are usually rich in nutrients, but need to be amended to create
the conditions that will allow the plants to access those nutrients, as well as encourage roots to
easily penetrate that tight clay. Organic methods of amending alkaline clay soil can be as simple
as mixing leaves, chopped or ground pine needles, coffee grounds, and the contents of tea bags into
the soil, but remember that these organic methods should be done in advance. It would be optimal to
use this strategy of soil amendment starting the winter before planting to allow the amendments to
decay and compost, and settle into the soil, making their pH adjustments. A quicker adjustment is
made by mixing compost and sand into the soil.

Sandy soil will provide great drainage, but has no ability to hold nutrients, so gardeners must amend
this soil with a high quality compost to achieve the coveted sandy loam.

Hydroponic systems are designed to simplify the process of growing one’s crop. The grower checks their
pH at least twice a day, and is able to quickly make adjustments. A basic pH of 6.0 will allow the plants
to ebb and flow between 5.5 and 6.5.
the best marijuana plants
Gardeners of both indoor and outdoor crops should remember that the pH of their growing medium naturally
changes as the plants consume their nutrients. This is the challenge of the pH dance.

Experienced gardeners learn to read their plants, and can tell what they need by indicators such as the
color of the leaves, the stance of the plant, and the plant’s growth pattern. Yellow leaves indicate a
lack of iron, indicating alkalinity, and acidic conditions will create burn spots on the leaves and
a wilting stance.

The main objective is making sure that the feminized cannabis plant has the necessary nutrients. Chelated
plant food is chemically designed to be available to plants, and will assist the gardener throughout the
ups and downs of the pH.


Are you sure you are using a true soil? My first time around, I wasn’t aware that I was using a coco-based “soilless” soil, which runs at a lower pH and needs lower pH water/nute mix. Regardless, @garrigan62 's info will put you on the path. Good luck.

After applying your nutrients is that the time you check your pH I use RO water I checked the pH in the water but never after the nutrients this is wrong yes

Yes, that was wrong, you want to Ph after you add your nutes to the water.

I guess it’s best to take the title 100% American dumbass I’m three and a half weeks into bud it’s too late huh

Don’t fret. I made so many mistakes the first time though and the weeds made it through. You’ll be fine, there tons of information on this site in addition to the good folks ready to help on the he forum

Live and learn it can only better my next