So the question is how do I test water, soil run off, and nute water mixes ph if the waters collord.
Use a small, very clean jar with a cap. Preferably a tall, rather than wide jar.
Soil: Add a tablespoon or two of the soil, add water to above soil.
How much do you need for the test? That is how much you should have above the soil line.
Shake vigorously. Place sample on table (wherever), and let sit for 1 hour.
After an hour the solids should have settled to the bottom.
Don't stir or shake.
Pour the supernatant (water) into your tube for testing.
Keep the sample at a constant temperature.
Dispose of solids outside.
This is as close as I can come to a decent testing method without getting more complicated.
Doing a color comparison test on tinted fluids will still be inaccurate. But since you are only guestimating here anyway......
Runoff and
Nutesmay be tested as-is, or using the above procedure if there is heavy solids material.
As long as the runoff is not oily, it should work. Just let any solids settle out.
I have an entire thread dedicated to pH testing on RIU. After you brought this up, I am going to add solids testing to it. Thanks.
https://www.rollitup.org/general-marijuana-growing/701733-lets-talk-about-ph-testing.html