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Formulated and made in the usa: designed by botanists and plant chemists in Seattle, Washington. Simply the best choice for the conscientious grower. Works in all environments: Designed for hydroponics systems, soilless mediums eg: coco coir and peat, and soil gardens.
Safe to use for all plants: add to every watering to adjust pH to the desired level, for soil usually aim for a pH of 5. 8-6. 2, it’s that easy. Strong acid for superior ph stability: bloom City pH Down is a strong pH adjusting acid that helps the home grower maintain optimal pH levels.

General hydroponics ph control Kit contains everything you need to measures pH levels of your hydroponic grow reservoirs.



Accurate & reliable: double-needle Detection Technology strongly enhances the speed and accuracy of detecting and analyzing soil moisture and pH acidity. Kindly note: this soil tester can not be applied to test pH value of any other liquid.

Works in all environments: Designed for hydroponics systems, soilless mediums eg: coco coir and peat, and soil gardens. Highest quality, most potent, best value, better for you, biggest yield: bloom city’s ingredients are better for plants, and better for the planet.
Safe to use for all plants: add to every watering to adjust pH to the desired level, for soil usually aim for a pH of 5. 8-6. 2, it’s that easy. Bloom city chooses only the highest quality ingredient sources and manufacturing methods to create the world’s best craft growing nutrient systems.


Simply the best choice for the conscientious grower. Safe to use for all plants: add to every watering to adjust pH to the desired level, usually aim for a pH of 5. 8-6. 2, it’s that easy.
Works in all growing environments: Designed for hydroponics systems, soilless mediums eg: coco coir or peat, and soil gardens. Formulated and made in the usa: designed by botanists and plant chemists in Seattle, Washington. Strong base for superior ph stability: bloom City pH Up is a strong pH adjusting base that helps the home grower maintain optimal pH levels.

Upgraded & improved: our professional research team spent two years researching the upgraded mold. If the soil is too dry the indicator will not move, and water it before testing. Improved probes and upgraded detection technology ensure quicker, more accurate readings.
1. General Hydroponics
#ad
1 qt. Bottles, General Hydroponics pH Up and pH Down Liquids, Stabilize Nutrient pH in Hydroponics
#adGeneral Hydroponics #ad - Bottles. Ph down: acid formulation that uses phosphoric acid. Ph up: base solution formulated with potassium carbonate. Ph is important because it affects availability and absorption of several of the 16 atomic elements needed for plant growth.More information #ad
Includes ph up and pH Down 1 qt. Liquids to stabilize nutrient pH in hydroponics.Brand | General Hydroponics #ad |
Manufacturer | General Hydroponics #ad |
Height | 9 Inches |
Length | 7 Inches |
Width | 7 Inches |
Part Number | VB00065 |
Model | VB00065 |
More information #ad
2. Bloom City
#ad
Bloom City Professional pH Down Liquid Fertilizer, Quart 32 oz
#adBloom City #ad - Formulated with the highest grade pH adjusting formula. Highest quality, most potent, biggest yield: bloom city’s ingredients are better for plants, better for you, BEST VALUE, and better for the planet.Formulated and made in the usa: designed by botanists and plant chemists in Seattle, Washington. Simply the best choice for the conscientious grower. Works in all environments: Designed for hydroponics systems, soilless mediums eg: coco coir and peat, and soil gardens.
More information #ad
Bloom city chooses only the highest quality ingredient sources and manufacturing methods to create the world’s best craft growing nutrient systems. Safe to use for all plants: add to every watering to adjust pH to the desired level, for soil usually aim for a pH of 5. 8-6. 2, it’s that easy. Strong acid for superior ph stability: bloom City pH Down is a strong pH adjusting acid that helps the home grower maintain optimal pH levels.
Brand | Bloom City #ad |
Manufacturer | Bloom City #ad |
Weight | 2.01 Pounds |
Part Number | phdown-32-fba |
More information #ad
3. General Hydroponics
#ad
General Hydroponics pH Control Kit for a Balanced Nutrient Solution
#adGeneral Hydroponics #ad - Test indicator, and a pH level chart. Reliable results: the streamlined testing system delivers fast, accurate, and easy-to read results every time. The preferred way of testing ph: seasoned growers prefer our pH Test Kit to expensive electronic meters because of its reliability and ease-of- use.General hydroponics ph control Kit contains everything you need to measures pH levels of your hydroponic grow reservoirs.
More information #ad
General hydroponics pH Down Liquid, an eyedropper, test tube, 1 oz. All-in-one kit: includes 8 oz. General hydroponics ph up liquid, 8 oz. Easy to use: to use, add a few drops of ph test indicator, simply fill a test tube halfway with nutrients, and observe the coloration of the liquid; recommended pH for most plants is 5.5 to 6. 5.Brand | General Hydroponics #ad |
Manufacturer | General Hydroponics #ad |
Height | 1 Inches |
Length | 1 Inches |
Weight | 1.5 Pounds |
Width | 1 Inches |
Part Number | HGC722080 |
Model | HGC722080 |
More information #ad
4. Fox Farm
#ad
Foxfarm Cultivation Nation PH Down, 1 Qt.
#adFox Farm #ad - For use in both soil and hydroponic environmentsSpecifications. Produced with the highest grade materials. Capacity: 1 qt. Formulated with citric acid. Satisfaction Ensured.More information #ad
Brand | Fox Farm #ad |
Manufacturer | Foxfarm #ad |
Part Number | 5039072 |
Model | 5039072 |
More information #ad
5. Safer Gro
#ad
Safer Gro SG9920QT Ph Down Lowers Water
#adSafer Gro #ad - Helps prevent clogging of equipment. Corrects hard water; prevents precipitation with ca, mg, etc. Ph reducer solution. Organic certified. Removes scale and hard water deposits. Compatibility agent.More information #ad
Brand | Safer Gro #ad |
Manufacturer | SaferGro #ad |
Height | 925 Inches |
Length | 5 Inches |
Weight | 2.75 Pounds |
Width | 25 Inches |
Part Number | SG9920QT |
Model | SG9920QT |
More information #ad
6. SONKIR
#ad
Farm, SONKIR Soil pH Meter, MS02 3-in-1 Soil Moisture/Light/pH Tester Gardening Tool Kits for Plant Care, Indoor & Outdoor Use Green, Lawn, Great for Garden
#adSONKIR #ad - 3-in-1 function: test soil moisture, pH value and sunlight level of plant with our soil meter, helps you specialize in grasping when you need to water your plant. If the soil is too dry the indicator will not move, and water it before testing.Accurate & reliable: double-needle Detection Technology strongly enhances the speed and accuracy of detecting and analyzing soil moisture and pH acidity. Kindly note: this soil tester can not be applied to test pH value of any other liquid.
More information #ad
Easy to use: no batteries needed, ph, toggle switch to test moisture, just insert the sensor probe into the soil about 2-4 inches, sunlight you would like to measure. Indoor & outdoor use: design to be lightweight and portable, easy to carry around for outdoor use, ideal soil test tool kit for home plants, garden, lawn and farm.Brand | SONKIR #ad |
Manufacturer | Sonkir #ad |
Height | 1.5 Inches |
Length | 11.5 Inches |
Width | 2 Inches |
Part Number | MS02 |
Model | Soil Tester |
More information #ad
7. Bloom City
#ad
Bloom City Professional pH Up + Down Control Kit for Optimal Nutrient Uptake Two 1/2 Pint Bottles 16 Total oz
#adBloom City #ad - Formulated with the highest grade pH adjusting formulas. Simply the best choice for the conscientious grower. Formulated and made in the usa: designed by botanists and plant chemists in Seattle, Washington.Works in all environments: Designed for hydroponics systems, soilless mediums eg: coco coir and peat, and soil gardens. Highest quality, most potent, best value, better for you, biggest yield: bloom city’s ingredients are better for plants, and better for the planet.
More information #ad
Strong acid and base for superior ph stability: Bloom City pH Down and Up are strong pH adjusting agents that help the home grower maintain optimal pH levels. Safe to use for all plants: add to every watering to adjust pH to the desired level, for soil usually aim for a pH of 5. 8-6. 2, it’s that easy. Bloom city chooses only the highest quality ingredient sources and manufacturing methods to create the world’s best craft growing nutrient systems.
Brand | Bloom City #ad |
Manufacturer | Bloom City #ad |
Part Number | phudkit-16 |
More information #ad
8. Viagrow
#ad
Viagrow VGPDD501 Natural pH Down Adjusting Crystals, LB, Green, 1 LB
#adViagrow #ad - Add crystals in small Quantities, Mix Thoroughly, Then Check Ph. Compatible with Organic And Synthetic Fertilizers. Brand: Viagrow. For soil, hydroponics, Soilless, Hydro-Organic, And Foliar Applications.More information #ad
Brand | Viagrow #ad |
Manufacturer | Viagrow #ad |
Height | 8 Inches |
Length | 2.5 Inches |
Weight | 1 Pounds |
Width | 2.5 Inches |
Part Number | VGPDD501 |
Model | VGPDD501 |
More information #ad
9. Bloom City
#ad
Quart 32 oz, Bloom City Professional pH Up Liquid Fertilizer
#adBloom City #ad - Bloom city chooses only the highest quality ingredient sources and manufacturing methods to create the world’s best craft growing nutrient systems. Detailed application instructions included in product packaging.Simply the best choice for the conscientious grower. Safe to use for all plants: add to every watering to adjust pH to the desired level, usually aim for a pH of 5. 8-6. 2, it’s that easy.
More information #ad
Highest quality, most potent, better for you, biggest yield: bloom city’s ingredients are better for plants, BEST VALUE, and better for the planet. Formulated with the highest grade pH adjusting formula. Works in all growing environments: Designed for hydroponics systems, soilless mediums eg: coco coir or peat, and soil gardens. Formulated and made in the usa: designed by botanists and plant chemists in Seattle, Washington. Strong base for superior ph stability: bloom City pH Up is a strong pH adjusting base that helps the home grower maintain optimal pH levels.
Brand | Bloom City #ad |
Manufacturer | Bloom City #ad |
Weight | 2.01 Pounds |
Part Number | phup-32-fba |
More information #ad
10. SONKIR
#ad
MS-X1 Upgraded 3-in-1 Soil Moisture/Light/pH Tester Gardening Tool Kits for Plant Care, Great for Garden, Farm Black, SONKIR Soil pH Meter, Lawn
#adSONKIR #ad - 3-in-1 function: test soil moisture, pH value and sunlight level of plant with our soil meter, helps you specialize in grasping when you need to water your plant. Expanded screen space improves reading experience and accuracy.Upgraded & improved: our professional research team spent two years researching the upgraded mold. If the soil is too dry the indicator will not move, and water it before testing. Improved probes and upgraded detection technology ensure quicker, more accurate readings.
More information #ad
Kindly note: this soil tester can not be applied to test pH value of any other liquid. Indoor & outdoor use: design to be lightweight and portable, garden, easy to carry around for outdoor use, ideal soil test tool kit for home plants, lawn and farm. Large screen: the large display makes readings clearer and more convenient than ever.Brand | SONKIR #ad |
Manufacturer | Sonkir #ad |
Part Number | part1598 |
Model | MS-X1 |
More information #ad