Quote Originally Posted by Pass That Shit
Rain water has the right pH for every plant :thumbsup:
Let´s just think about this for a minute,

Rain water has the right ph?
Yes in most cases it does have, but u should allways test it 1st...

What other elements can u find in rain water???
That really depends where u live doesnt it???I´m pretty sure that if u live in a very industrial area you will find lots of chems in the water that are not suitable for your plants, and the water ph might not be what u are looking for...

I have tested rain water ph many times and i can tell u the ph its not allways the same, i never had the chance to send it to a lab and test it but some users in the forum have and the results werent to good...

So this is what i allways do....

1st - Get tap water, let the water rest in a bucket for 24 hours so the clorine can evaporate.

2nd - After test the water ph (allways)

3rd - Use Ph up and Ph down solutions to get the Ph between 6.3 and 6.8.
Phosphoric acid to raise pH and potassium hydroxide to lower pH.

4th - Do not use fish chemicals to adjust pH.Toxic buildups can occur.

This method has been described in books such as:

Greg Green´s - "Cannabis Grow Bibble"
Todd McCormick´s - "How to grow Medical Marijuana"


So unless u have ur rain water properlly tested NEVER use it ...
OmegaVermelho Reviewed by OmegaVermelho on . What's the best way to adjust pH? Ok, I figured out the problem. Ph is off. I transplanted one plant into new soil because she was small enough to do so but this other one is too big and she has buds everywhere. Her Ph is in the range of 4.9-5.1. Way too low. Two months ago I had transplanted her into a 5 gallon bucket. The soil I was to put her in was at 8.4 pH. So the lady at the nursery recommended how much sulfur to add in the mix to lower her pH before I put her in new soil. I had mixed a Ph adjuster to her soil Rating: 5