General HydroponicspH Control Kit For A Balanced Nutrient Solution

The test kit works phenomenally. Super easy and a cheap way to accurately test your water pre and post treatment.Speaking of treatment, it only takes a few milliliters of the up/down solution to treat 5 gallons of water at a time. Literally, 2-4 ml to get 5 gallons of 7ph water to 6ph, mixes quick and stays the same PH during storage post treat.

I’ve been using General Hydroponics pH Up and pH Down for maintaining the pH balance in my hydroponic nutrient reservoir, and I’m impressed with how reliable these products are.First off, the formulas are highly effective. A little goes a long way, which is great for precision adjustments without overcorrecting. Whether I need to raise or lower my pH, these solutions act quickly, giving me full control over the nutrient solution.One thing I really appreciate is how easy they are to use. Both products are well-labeled with clear instructions, making them beginner-friendly while still being ideal for experienced growers. They don’t cloud the water or interfere with nutrients, which is a big plus when you’re trying to maintain a stable reservoir environment.I’ve noticed that using these consistently has improved plant health. Maintaining the correct pH ensures that the plants absorb nutrients efficiently, and I’ve seen stronger growth and healthier root systems since adding GH pH Up and Down to my routine.If you’re serious about hydroponics, these are must-have tools. The bottles are durable and come in various sizes to suit any setup. Overall, I highly recommend General Hydroponics pH Up and pH Down for anyone managing a hydroponic system. They’re reliable, efficient, and worth every penny.

Perfect for cannabis growing. Just make sure you let your RDWC circulate long enough to get the right readings.

This product is great, it does the job well and comes with everything you need. We personally got an Apera ph tester as well and just use the up and down adjustment fluids. Both work well and did not leak during shipment. However I think more sizes and price points need to be offered for these products. You use very very little of this product, so this will last me a long time. I would have rather bought a smaller set of bottles and saved some money.

This product does exactly what it says it does! efficiently too!this product is 3 bottles pH-up, pH-down and a pH test solution. (also comes with a vial to conduct the pH testing in AND a pipette which I thought was great, I ended up getting on before I opened the package assuming they did not provide one, but General Hydroponics really gives you everything you need to open the package and do testing RIGHT AWAY!)I tested this on my hydroponic system with a calibrated pH meter hehe.....I wanted to know how accurate the test solution is. The test solution runs on a color scale, acidic being pink basic being dark green. The scale is located ON THE BOTTLE! so you never will lose it. As far as my basic testing concluded, the test solution is accurate; the color changes are visibly recognizable and comparable to the provided scale. 6.0 is yellow, 7.0 is green, and both of these matched my pH meter (in approximation, don't expect to perfectly get a 6.3 or something, this test kit is intended for keeping pH in a safe range, you could play with it and get exactly what pH you want with the assistance of a pH meter but I am judging this based on if a user DID NOT have access to a pH meter going on the test solution only.)The acid solution is very effective, which is nice, you don't want to use a lot of product to achieve results and end up being in need of more solution spending more $$$. I suggest using this 1-3 drop at a time, waiting 20 mins or so based on water flow and size of your container, and doing another test. Don't over do it, always undershoot what you are aiming for; you will save product and also prevent too acid/basic solution......just be patient, eventually you will understand the power of the acid/base solutions and wont even have to second guess if you put too much in or not.All in all, this is a must for a hobby hydroponic gardener or even a professional. Having a pH meter is nice, but some times the calibration may be off and having another testing method as provided in this kit is a good safety. I enjoy testing my solutions BOTH with the meter and the test solution because I know with out a doubt if my solution is within the correct pH range.This will last probably a year or even more depending on how big your system is. Just use sparingly and maybe play with the testing solution with known known acid/base solutions so you can take not of what the ACTUAL color of the liquid will look like in correspondence with the pH. Maybe put some vinegar in the vial, drop some test solution and take note. you will see a bright pink color. add some of the base solution and you will see the color change in the vial....do this before you mess with your actual nutrient solution just to get a feel for the colors!5 stars for: price, reliability, longevity of the product use and ease of use.General Hydro is kind of the "big boss" hydro company and they really know what they are doing. Every product thus far I have purchased is good.

Works great! I've had to guess how much to use to raise or lower pH, but the included dropper has been helpful in allowing me to keep track of how much I'm using each time.

Works great

Excellent, timely, good packaging, quality product.