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General Hydroponics
Active Aqua
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Active Aqua Chiller refrigeration unit 1/2 HP - Free Shipping
- Ideal to keep hydroponic solution in your reservoir at the perfect temperature.
- Microcomputer control system and LCD display, very user friendly.
- Large refrigeration capacity, water can be refrigerated to any degree above 39F in a short period of time.
- Freon free, environmentally friendly.
- Temperature memory system.
- Surge protected, will turn off if there is a power surge.
- 1/2 HP, 1200-3000 L, 360 Watts, 4.4 Amps, 4020 BTU
- 18.7"L x 14.1"W x19.3"H
- Use PU550 for lowest temperature range
- Use PU800 for higher temperature range
Tubing Size: 1/2" (HGTB50), 3/4" (HGTB75), 1" (HGTB100)
- SKU:
- AACH50
Retail: $944.95
Special Price: $631.22
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Active Aqua Chiller refrigeration unit 1/4 HP - Free Shipping
Ideal to keep hydroponic solution in your reservoir at the perfect temperature. Microcomputer control system and LCD display very user friendly. Large refrigeration capacity water can be refrigerated to any degree above 39F in a short period of time. Freon free environmentally friendly. Temperature memory system. Surge protected will turn off if there is a power surge.1/4 HP 1000-2500 L/H 280 Watts 3 Amps 3010 BTU17.6L x 13"W x 17.3"H Use PU250 for lowest temperature range Use PU550 for higher temperature rangeTubing Size: 1/2" (HGTB50) 3/4" (HGTB75)"- SKU:
- AACH25
Retail: $524.95
Special Price: $425.00
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ActiveAqua 2'x2' Humidome
This Active Aqua humidity dome fits perfectly with the 2X2 Active Aqua flood table. It features 3-way ventilation for superior temperature and humidity control with vents on the top and on the side. These tall (8 1/2" high), sturdy domes accommodate larger plants for increased growing volume.
- SKU:
- HGFTDM22
Retail: $69.95
Special Price: $49.24
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ActiveAqua 2'x4' Humidome
This ActiveAqua humidity dome fits perfectly with the 2x4 ActiveAqua flood table. It features 3-way ventilation for superior temperature and humidity control with vents on the top and on the side. These tall (8 1/2" high), sturdy domes accommodate larger plants for increased growing volume.
- SKU:
- HGFTDM24
Retail: $134.95
Special Price: $87.58
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ActiveAqua 3'x3' Humidome
This Active Aqua humidity dome fits perfectly with the 3X3 Active Aqua flood table. It features 3-way ventilation for superior temperature and humidity control with vents on the top and on the side. These tall (8 1/2" high), sturdy domes accommodate larger plants for increased growing volume.
- SKU:
- HGFTDM33
Retail: $103.95
Special Price: $71.93
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ActiveAqua Chiller refrigeration unit 1/10 HP - Free Shipping
Ideal to keep hydroponic solution in your reservoir at the perfect temperature. Microcomputer control system and LCD display very user friendly. Large refrigeration capacity (250-1200L 65-300gal) water can be refrigerated to any degree above 39F. Freon free environmentally friendly. Temperature memory system. Surge protected will turn off if there is a power surge.1/10 HP 250-1200 L/H 150 Watts 2.2 Amps 1020 BTU16.5L x 9.6"W x 14.4"HUse AAPW160 for lowest temperature range Use AAPW250 for higher temperature range Tubing Size: 1/2" (HGTB50) 3/4" (HGTB75)"- SKU:
- AACH10
Retail: $379.95
Special Price: $320.00
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Floating Thermometer
Delivers easy and accurate readings of your water temperature. The gauge floats and has a pressure sensitive backing for easy mounting. It features readings in both Celsius and Fahrenheit, as well as clear markings that delineate ideal nutrient temperature.- SKU:
- HGFLT
Retail: $2.09
Special Price: $1.98
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General Hydroponics 1500 ppm Calibration Solution 1 Quart
General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use our reference solutions widely among many popular brands of meters using the NaCl scale. General Hydroponics technicians check each batch to ensure that our solutions are exactly calibrated each time they are used.
- SKU:
- GH1572
Retail: $21.50
Special Price: $18.50
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General Hydroponics 1500 ppm Calibration Solution 8 oz
General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use our reference solutions widely among many popular brands of meters using the NaCl scale. General Hydroponics technicians check each batch to ensure that our solutions are exactly calibrated each time they are used.
- SKU:
- GH1571
$11.10
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General Hydroponics pH 4.01 Calibration Solution 1 Quart
General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use our reference solutions widely among many popular brands of meters using the NaCl scale. General Hydroponics technicians check each batch to ensure that our solutions are exactly calibrated each time they are used.- SKU:
- GH1542
Retail: $21.50
Special Price: $18.50
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General Hydroponics pH 4.01 Calibration Solution 8 oz
General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use our reference solutions widely among many popular brands of meters using the NaCl scale. General Hydroponics technicians check each batch to ensure that our solutions are exactly calibrated each time they are used.- SKU:
- GH1541
$10.80 -
General Hydroponics pH 7.0 Calibration Solution 1 Quart
General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use our reference solutions widely among many popular brands of meters using the NaCl scale. General Hydroponics technicians check each batch to ensure that our solutions are exactly calibrated each time they are used.- SKU:
- GH1552
Retail: $21.50
Special Price: $18.50
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General Hydroponics pH 7.0 Calibration Solution 8 oz
General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use our reference solutions widely among many popular brands of meters using the NaCl scale. General Hydroponics technicians check each batch to ensure that our solutions are exactly calibrated each time they are used.- SKU:
- GH1551
$10.80 -
General Hydroponics pH Control Kit
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).- SKU:
- GH1514
Retail: $17.20
Special Price: $16.10
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General Hydroponics pH Down 1 Gallon
To maximize plant growth the pH content of your nutrients should be slightly acidic. Experienced growers consider the ideal pH for most crops to fall between 5.5 and 6.5. Users of General Hydroponics nutrient products generally do not experience problems maintaining the proper pH range because our formulas are pH buffered. However some important exceptions do exist. Acid content can reach unacceptable levels when nutrient solutions are mixed with poor quality water or pH unstable media - such as rock wool and gravel products - are used and when high plant growth rates destabilize the nutrient mix due to rapid nutrient absorption by the crop.pH Down: Acid formulated using food grade Phosphoric acid. Just add a little at a time if your nutrient pH is too high in order to lower the pH to the proper level.- SKU:
- GH1533EACH
Retail: $27.95
Special Price: $25.00
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General Hydroponics pH Down 1 Quart
To maximize plant growth the pH content of your nutrients should be slightly acidic. Experienced growers consider the ideal pH for most crops to fall between 5.5 and 6.5. Users of General Hydroponics nutrient products generally do not experience problems maintaining the proper pH range because our formulas are pH buffered. However some important exceptions do exist. Acid content can reach unacceptable levels when nutrient solutions are mixed with poor quality water or pH unstable media - such as rock wool and gravel products - are used and when high plant growth rates destabilize the nutrient mix due to rapid nutrient absorption by the crop.pH Down: Acid formulated using food grade Phosphoric acid. Just add a little at a time if your nutrient pH is too high in order to lower the pH to the proper level.- SKU:
- GH1532EACH
Retail: $11.50
Special Price: $11.00
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General Hydroponics pH Down Dry 1.5lbs. Acid
To maximize plant growth, the pH content of your nutrients should be slightly acidic. Experienced growers consider the ideal pH for most crops to fall between 5.5 and 6.5. Users of General Hydroponics nutrient products generally do not experience problems maintaining the proper pH range because our formulas are pH buffered. However, some important exceptions do exist. Acid content can reach unacceptable levels when nutrient solutions are mixed with poor quality water, or pH unstable media - such as rock wool and gravel products - are used, and when high plant growth rates destabilize the nutrient mix due to rapid nutrient absorption by the crop.pH Down: Acid formulated using food grade Phosphoric acid. Just add a little at a time if your nutrient pH is too high in order to lower the pH to the proper level.
- SKU:
- GH1535
Retail: $20.90
Special Price: $10.76
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General Hydroponics pH Down Dry 16lbs. Acid
To maximize plant growth, the pH content of your nutrients should be slightly acidic. Experienced growers consider the ideal pH for most crops to fall between 5.5 and 6.5. Users of General Hydroponics nutrient products generally do not experience problems maintaining the proper pH range because our formulas are pH buffered. However, some important exceptions do exist. Acid content can reach unacceptable levels when nutrient solutions are mixed with poor quality water, or pH unstable media - such as rock wool and gravel products - are used, and when high plant growth rates destabilize the nutrient mix due to rapid nutrient absorption by the crop.pH Down: Acid formulated using food grade Phosphoric acid. Just add a little at a time if your nutrient pH is too high in order to lower the pH to the proper level.
- SKU:
- GH1537
Retail: $64.50
Special Price: $39.66
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General Hydroponics pH Test Indicator 8 oz
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.- SKU:
- GH1516
$12.60 -
General Hydroponics pH Test Kit 1 oz
pH test kit- SKU:
- GH1515
$10.80 -
General Hydroponics pH Up Four Gallons - one Case - Free Shipping
To maximize plant growth the pH content of your nutrients should be slightly acidic. Experienced growers consider the ideal pH for most crops to fall between 5.5 and 6.5. Users of General Hydroponics nutrient products generally do not experience problems maintaining the proper pH range because our formulas are pH buffered. However some important exceptions do exist. Acid content can reach unacceptable levels when nutrient solutions are mixed with poor quality water or pH unstable media - such as rock wool and gravel products - are used and when high plant growth rates destabilize the nutrient mix due to rapid nutrient absorption by the crop.pH Down: Acid formulated using food grade Phosphoric acid. Just add a little at a time if your nutrient pH is too high in order to lower the pH to the proper level.- SKU:
- GH1523
Retail: $107.60
Special Price: $65.63
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General Hydroponics pH Up 1 Gallon
To maximize plant growth the pH content of your nutrients should be slightly acidic. Experienced growers consider the ideal pH for most crops to fall between 5.5 and 6.5. Users of General Hydroponics nutrient products generally do not experience problems maintaining the proper pH range because our formulas are pH buffered. However some important exceptions do exist. Acid content can reach unacceptable levels when nutrient solutions are mixed with poor quality water or pH unstable media - such as rock wool and gravel products - are used and when high plant growth rates destabilize the nutrient mix due to rapid nutrient absorption by the crop.pH Down: Acid formulated using food grade Phosphoric acid. Just add a little at a time if your nutrient pH is too high in order to lower the pH to the proper level.- SKU:
- GH1523EACH
Retail: $26.90
Special Price: $21.52
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General Hydroponics pH Up Dry 16lbs. Base
To maximize plant growth, the pH content of your nutrients should be slightly acidic. Experienced growers consider the ideal pH for most crops to fall between 5.5 and 6.5. Users of General Hydroponics nutrient products generally do not experience problems maintaining the proper pH range because our formulas are pH buffered. However, some important exceptions do exist. Acid content can reach unacceptable levels when nutrient solutions are mixed with poor quality water, or pH unstable media - such as rock wool and gravel products - are used, and when high plant growth rates destabilize the nutrient mix due to rapid nutrient absorption by the crop.pH Up: Base formulated using Potassium Hydroxide and Potassium Carbonate. Add a little at a time if your nutrient pH is too low in order to raise the pH to the proper level.
- SKU:
- GH1527
Retail: $106.00
Special Price: $64.66
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General Hydroponics pH Up Dry 2.2 lbs Base
To maximize plant growth, the pH content of your nutrients should be slightly acidic. Experienced growers consider the ideal pH for most crops to fall between 5.5 and 6.5. Users of General Hydroponics nutrient products generally do not experience problems maintaining the proper pH range because our formulas are pH buffered. However, some important exceptions do exist. Acid content can reach unacceptable levels when nutrient solutions are mixed with poor quality water, or pH unstable media - such as rock wool and gravel products - are used, and when high plant growth rates destabilize the nutrient mix due to rapid nutrient absorption by the crop.pH Up: Base formulated using Potassium Hydroxide and Potassium Carbonate. Add a little at a time if your nutrient pH is too low in order to raise the pH to the proper level.
- SKU:
- GH1525
Retail: $22.90
Special Price: $15.00
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Hydrofarm Tray, 12"x41"
Our ActiveAqua growing trays come in two popular sizes and make growing easy with their versatility and solid construction. Advanced channel design eliminates channel blockage and standing water to ensure proper and prompt drainage. They are perfect for holding Rockwool or Stonewool slabs, Hugo Blocks, Sure to Grow, or any loose growing media like peat, perlite, or starter cubes. You can also place planters into the trays if you so desire.
- SKU:
- HGFT1241
Retail: $32.95
Special Price: $23.19
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Hydrofarm Tray, 8"x41"
Our ActiveAqua growing trays come in two popular sizes and make growing easy with their versatility and solid construction. Advanced channel design eliminates channel blockage and standing water to ensure proper and prompt drainage. They are perfect for holding Rockwool or Stonewool slabs, Hugo Blocks, Sure to Grow, or any loose growing media like peat, perlite, or starter cubes. You can also place planters into the trays if you so desire.
- SKU:
- HGFT841
Retail: $28.95
Special Price: $20.38
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Rapid Rooter Mat
Derived from naturally composted tree bark, created through a process which produces large populations of beneficial microbes which colonize roots to help plants maximize nutrient uptake. Optimal air-to-water ratio.
- 98 natural plant starters for propagating cuttings and germinating seeds
- New! cross cut for better contact around the stem
- SKU:
- GH3257
$21.00
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Rapid Rooter Replacement plugs, 50 plug bag
Rapid Rooter plugs are fortified with General Hydroponic micronutrients for abundant root growth. The optimal air-to-water ratio within the plug matrix results in explosive early root growth. Use Rapid Rooter for robust early rooting that supports explosive plant growth.- SKU:
- GH3255EACH
Retail: $18.90
Special Price: $17.95
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Rapid Rooter Tray - 50 cell tray & plugs
A special matrix of composted organic material bound together by plant-derived polymers. Created through a scientifically controlled process that produces large populations of beneficial microbes which colonize young roots and help young plants resist disease while maximizing nutrient uptake. Fortified with General Hydroponic micronutrients optimal air-to-water ratio.- SKU:
- GH3254EACH
Retail: $26.95
Special Price: $20.95




