pH Control Kit – General Hydroponics
- Measures water pH
- Includes agents to adjust pH up or down
Contains Ph Up (add a little at a time when your nutrient pH is too low in order to raise the pH to the proper level), Ph Down (uses food grade Phosphoric acid to lower the pH to the proper level), and Ph Test Indicator (fill a test-tube halfway with nutrient, add a few drops of pH Test Indicator, and observe the coloration of the liquid in the test vial. Use 3 drops per 5mL of solution).
Rating: 
(out of 12 reviews)
Price: $ 12.00
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5 Responses
Review by Ben Cole for pH Control Kit – General Hydroponics
Rating:
I’ve used it one time and it was very effective. Since purchasing this kit I’ve read a book on beginning hydroponics–apparently you can use vinegar to lower the PH and baking soda to raise it it you don’t want to spend the money on this kit.
Posted on October 3rd, 2010 at 2:09 pm
Review by E. L. Shepherd for pH Control Kit – General Hydroponics
Rating:
I bought this pH test kit instead of a digital pH meter. A good digital pH meter is fairly expensive and a cheap meter could have questionable accuracy. Plus, I have had experience using digital pH meters at work a few years ago, and they are just hard to deal with, not as far as using them, they are easy to use to test the pH of something, but they can easily fall out of tolerance and need to be calibrated, you don’t necessarily know when the reading is off and it needs to be calibrated, as in the pH measurements you’ve been getting were wrong for a while and you didn’t know it, the probes have to be kept wet or not depending on the model of meter, not to mention they are a sensitive electronic device and you have to just be careful with them.
So therefore, I got this pH test kit and it works great. Sure, it’s a regular test kit and doesn’t give you the absolute exact pH like a meter would, but if you need the pH of something to be in a particular range, as in water or nutrient solution for plants, this will certainly do the trick.
But I have to say that whatever you test probably needs to be clear or close to it, since you fill a vial half full and then put 3 to 5 drops of pH testing solution to observe the resulting color change to get the pH. In other words, I’m thinking you may not be able to test the pH of Kool Aid or tea or something, but water or water mixed with plant nutrients where the color is only slightly changed would be fine.
Posted on October 3rd, 2010 at 2:35 pm
Review by StaticApnea for pH Control Kit – General Hydroponics
Rating:
Works very well in controlling ph levels in soil and hydro setups. The color chart and indicator solution are very easy to work with. Takes me an extra 1 minute or less to adjust ph of nute solution. Good stuff. Consider the soluble powder version of the up and down if you want it to last longer. Also you get more for less shipping
Posted on October 3rd, 2010 at 3:34 pm
Review by Nathaniel Peterson for pH Control Kit – General Hydroponics
Rating:
This kit is very easy to use. Even the labeling is simple, very minimalist. This kit will also last a very long time considering it only takes several drops to adjust water ph. I don’t rely on the ph tester included in the kit, nevertheless, I still use it every time I test my water ph. I first use a digital ph meter, then I use the liquid tester that comes with the kit for a “second opinion”. Works pretty well!
Posted on October 3rd, 2010 at 3:44 pm
Review by J. Moody for pH Control Kit – General Hydroponics
Rating:
I’ve only used this product a few times but I already have better control on the ph of the water i use on my plants! It’s doing exactly what I needed it to do! very happy! This is a great starter kit…it has the tools you need and it’s a great price.
Posted on October 3rd, 2010 at 4:07 pm
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