We are Washington, D.C's premier location for all of your horticultural needs.
Located at 3744 10 St. NE, Washington, D.C. ; 20017
Call us at 202-248-2483.
Open 7 days a week Mon-Fri 11-7pm
Sunday 11-6pm
We are Washington, D.C's premier location for all of your horticultural needs.
Located at 3744 10 St. NE, Washington, D.C. ; 20017
Call us at 202-248-2483.
Open 7 days a week Mon-Fri 11-7pm
Sunday 11-6pm
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$18.12
15' Extension Probe Sensor Cable for the Greenhouse Master controller and the Digital CO2 Controller....
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$20.59
Using a timer to automate your lighting adds convenience and encourages productive growth with consistent...
+ Quick Look
$18.53
Using a timer to automate your lighting adds convenience and encourages productive growth with consistent...
+ Quick Look
$21.62
Active Air's indoor-outdoor thermometer gives you more. Made of sturdy materials to stand up to...
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$62.95
Controls heating and cooling equipment with both day/night set-pointsPrecise temperature sensorTemperature control differential +/- 3FBuilt-in...
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$12.97
Using an analog timer to automate your lighting adds convenience and encourages productive growth with...
+ Quick Look
$14.00
Using an analog timer to automate your lighting adds convenience and encourages productive growth with...
+ Quick Look
$448.20
Stay connected to your crop 24/7. Monitor, data log, and remotely view pH, conductivity and...
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$149.34
Developed to detect the presence of CO2 in ambient air, the Autopilot desktop CO2 monitor...
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$25.74
Hydrofarm's Fan Speed Controller was designed especially for centrifugal fans. This means it will help...
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$110.00
Programmable controller for Fluence or BML Lighting fixtures. Controls PAR intensity and sunrise/sunset schedules based...
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$544.45
The Autopilot Greenhouse Master Controller (GMC) is designed to precisely control temperature, humidity, and CO2...
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$23.95
Measures indoor/outdoor temperature & indoor humidity. Stores the Min./Max. values of the indoor/outdoor temperature and...
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$28.33
More power! Up your amperage without risking blowing an outlet or frying your electronics. Employ...
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$21.95
Hyper Fan® Speed Controller can adjust the Hyper Fan® from 35% to 100% airflow. It...
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$27.95
Works with AC/DC brush-type motors 15 amps or less. Three adjustable switch settings: full, variable...
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$26.59
Using a timer to automate your lighting adds convenience and encourages productive growth with consistent...
+ Quick Look
$58.45
Effectively monitor and control an indoor growing environment, even from a remote location. The "Remote...
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$170.95
Combination Recycling and Lighting Timer The Autopilot Master Digital Timer (MDT) controls lighting and recycling...
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$829.00
A workhorse for the serious gardener, the DPC-12000 can run up to ten 1000 watt...
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$899.00
This unit is capable of running up to ten 1000 Watt lights, plus 120 Volt...
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$869.00
This unit is capable of running up to ten 1000 Watt lights, plus 120 Volt...
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$999.00
In addition to effortlessly powering ten 1000 Watt lights at 240 Volts, the DPC-15000TD has...
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$799.95
A workhorse for the serious gardener, the DPC-12000 can run up to ten 1000 watt...
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$859.95
The DPC-12000-D is capable of running up to twelve 1000 Watt lights at 240 Volts....
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$969.00
In addition to effortlessly powering ten 1000 Watt lights at 240 Volts, the DPC-15000TD has...
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$2,498.00
The Powerbox® DPC-24000-BT is our largest and most advanced model so far. This unit has...
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$269.00
The DPC-4000-240V is a versatile 240 Volt lighting controller that can effortlessly run up to...
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$399.00
The DPC-7500-120V is a unique lighting controller that connects to a 4-wire 240 Volt service...
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$379.00
The DPC-7500-240V is a versatile 240 Volt lighting controller that can effortlessly run up to...
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$399.95
The DPC-7500-COMBO is a versatile 240 Volt lighting controller that provides four 240 Volt outlets...
Capital City Hydronics is now closed.
We want to thank all of our customers for their support and invite you to our main location.
11am-7pm Mon-Sat ;
11am-5pm Sundays
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