Retrofit your existing greenhouse to grow hydroponic produce!

Already have a greenhouse? Looking to grow something different? Having equipment problems? CropKing can help you retrofit your greenhouse and assist you in the production many different crops. Our trained sales and technical staff can help decide what is best for your situation.

While you can pick and choose individual components from our commercial catalog, many times we can quote you a complete package for less, and make sure that you have a system that will work correctly for your situation.

Our hydroponic nutrient injector systems form the backbone of a hydroponic system. Small simple systems can use a tank mixed nutrient, but that becomes unworkable for larger systems.

CropKing Nutrient Injector
The Cropking Nutrient Injector System is used in drain to waste systems like the perlite dutch bucket, rockwool slab, or perlite bag systems. The three head design will inject a two part hydroponic nutrient plus an acid for pH control. The user-friendly, low maintenance unit is designed for greenhouse hydroponic plant production, and it is easily adaptable to most any type of growing system.
    They come in 3 standard sizes: 2 Zone, 4 Zone and 8 Zone. Custom number of zones are also available. Requires the use of a irrigation timer or computer controller and three nutrient reservoir tanks (shown, but not included.)

CropKing NFT Fertroller
The CropKing Fertroller System enables the grower to automatically control the EC and pH of the nutrient solution in recirculating NFT type growing systems. With automatic EC and pH control the grower can expect higher production, better crop quality and more time for other greenhouse duties.

CropKing’s Fertroller System is more than just a controller. It is supplied completely assembled and mounted on a tubular steel stand and wired for 120 volt power. The unit includes a purpose-designed controller speci hydroponic growing systems. The Fertroller includes a pre-mounted two head pump to deliver “A” & “B” nutrient concentrates. Recently improved with the addition of an adjustable pH pump. 

The Fertroller will provide continuous control of EC and pH of the nutrient solution by adding nutrient and/or pH control solutions as needed. Easily adjustable set points and dosing cycles are displayed along with your desired targets on large (1/2”) digital readouts. The Fertroller also has user adjustable alarm triggers to work with your alarm system. The Fertroller has a preset safety lockout feature to prevent dosing if EC, pH and/or solution The EC control measurement range is 0.0 – 9.9 mS/cm with a control range of 0.2 – 9.8 mS/cm. Resolution is 0.1 EC with accuracy of ±3%. The EC probe has auto temperature compensation. The pH control measurement range is 4.0 – 7.2 pH with a control range of 5.0 – 7.2 pH. Resolution is 0.1 pH unit with accuracy of ±0.1 pH unit. The EC probe is factory calibrated with no adjustment needed. The pH probe is user calibrated. The controller and EC probe are warranted for 2 years and the pH probe warranty is 6 months. Other system components carry the manufacturers warranty.

Getting a System Quote
    We will be happy to discuss your needs on the phone (800)321-5656 or via email. If you email us, please include the following information:

• Current use of greenhouse (Tobacco, Bedding Plants, etc.)
• Type of Crop you wish to grow (lettuce, herbs, tomatoes, cucumber, eggplant, pepper, etc.)
• Size of Greenhouse (Length, Width of bay(s), and number of bays)
• Type of Greenhouse (Ground to Ground Arch, Gutter Connect)
• Make of Greenhouse (if known)
• Height of Gutter or Straight Sidewall
• Size of Growing Area or if you wish to fill the house
• Type of Growing System (Dutch Bucket, NFT, Perlite Bag, Rockwool)
• Current Environmental Systems in Greenhouse (Heaters, Fans, Evap. Cooling, Jet Fans, HAF Fans, Vents, Louvers, etc.)
• Type/Make of Environmental Controller (thermostat, Computer controller, etc.)
• Type and Amount of Ground Cover (Concrete, Soil, Gravel, Plastic Ground Cover)
• Slope of Greenhouse Floor and Direction (if any)
• Any other information you feel would help us