testing nutes and ph ?

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MR.Grass

Active Member
How long should i wait after adding nutes and ph up or down to test again?Should it have a few hrs to mix or do you guys just go by first reading thanks
 
Jeffdogg

Jeffdogg

Well-Known Member
i'll give the jug a good shake or res a minute or 2 stir (depending on how big the res is) then test again. W/e you use to adjust the PH is usually fast acting.

Over periods of time the PH in your water will fluxuate. Temps can shift the ph as well so leaving it out for a long time can alter the ph.
 
sensisensai

sensisensai

Well-Known Member
Werd. I usually add it and give a good stir, smoke a cig, WASH MY HANDS, and check. No problems in 2 years as far as that department goes. I'd give at least 2 max 15 minutes to be more specific
 
ImTheFireMan

ImTheFireMan

Well-Known Member
ya just shake that shit or stir it up and test.


if you
re using a res for your nutes i would test right before every watering. my stuff tends to drop, i always find mysef buying 2 or 3 times more ph up than down.
 
researchkitty

researchkitty

Well-Known Member
Ten minutes, assuming your reservoir or whatever your pH checking has some type of airstone or mixing tool, not stagnant water. If the water just sits still, make it not. :)
 
ImTheFireMan

ImTheFireMan

Well-Known Member
wiseguy316 said:
i have never needed to buy ph up, my water is 8 , water is the ph up i ever need
Click to expand...

so what about if you need 1200ppm and your ph is at 4.5? do you just add water to raise it?
that doesnt really make sense, because now you're diluting your mix.
 
Jeffdogg

Jeffdogg

Well-Known Member
I know a lot of people will nay-say when I say this. But I have used the same 2 items every grow since I started a few years back.

PH down = White Distilled Vinegar (I also heard citric acid you get at health food stores works quite well if not is "better" in a sense for your plants then vinegar does)

PH up = tap water (which I dont use nomore cause I use rain water to water/feed) or Baking soda.

I never had any issues with either and they are cheap.

This is pretty neat I picked this up in "PH Manifesto" A plethora of PH knowledge that the owners at nutrients put together.

At the bottom is a link to the thread I made about it but alot of ppl didn't care :oops:

https://www.rollitup.org/general-marijuana-growing/314750-ph-manifesto.html
 

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SickSadLittleWorld

Well-Known Member
Don't use organic acids for ph control. They aren't stable and don't keep the ph at any given level very long. Get the proper stuff at the hydro store. Its not that expensive, I can't understand why people cheap out on something so fundamental to your plant's health.

Try using vinegar and baking soda in a hydro setup...the plants will show lockout symptoms within 24 hours, guaranteed.
 
Jeffdogg

Jeffdogg

Well-Known Member
SickSadLittleWorld said:
Don't use organic acids for ph control. They aren't stable and don't keep the ph at any given level very long. Get the proper stuff at the hydro store. Its not that expensive, I can't understand why people cheap out on something so fundamental to your plant's health.

Try using vinegar and baking soda in a hydro setup...the plants will show lockout symptoms within 24 hours, guaranteed.
Click to expand...

Well tell that to the owner of advanced nutrients, you know one of the biggest HYDROPONIC NUTRIENTS manufacturer cause he is the one who suggested the citric acid. How many millions did you make last year again? :hump:


Some companies promote using chemicals to buffer your hydroponics nutrients. So what is a buffer? A buffer is a
chemical that helps maintain pH stability of the nutrient solution.
A lot of growers aren’t aware of this little known fact, but a lot of nutrient companies use magnesium, calcium and
potassium carbonate or bicarbonate as their pH buffers. This is absolutely not a good idea.
Here’s why: remember that carbonates and bicarbonates are anions and add to the alkalinity of your nutrient
solution and growing medium, and even though they might buffer the pH a
bit, these “down and dirty” pH buffers will cause your growing mediums pH
to accelerate up.
Click to expand...


Balancing Your pH
When adjusting your reservoir’s nutrients to adjust your pH. For example, potassium hydroxide (also called caustic
potash) can be used to raise your pH up. Use nitric and phosphoric acid to lower your pH down.
You can use nitric acid in your vegetative cycle because it will add nitrogen to your crop and phosphoric acid in your
flowering cycle because it will add phosphorus.
And guess what? Personally I prefer to use nitric acid in my flowering cycle because tissue samples have shown
your favorite plant doesn’t use a whole lot of phosphorus during flowering. In fact, in most cases nitrogen use increases.
If you’re looking for organic forms of pH down you can use citric acid to bring the pH down. This you can get at a
vitamin store; just make sure that it is a really pure type of citric acid.
You can even use vinegar (acetic acid) but the acetic acid varies in different vinegars so you have to be a bit more
careful and watch what goes on. For this reason, citric acid is the preferred acid to use
Click to expand...
http://www.growersunderground.com/pHManifesto
 
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SickSadLittleWorld

Well-Known Member
WTF does AN have anything to do with this? They give you bad information and its all of a sudden fact because they make millions selling overpriced nutes to suckers?
 
Jeffdogg

Jeffdogg

Well-Known Member
Not everybody is in it for the rep potroast as i said on many of posts, some ppl are really here for growing and not popularity contest...
 
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