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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$123.59
Active Air climate control products are available for a variety of indoor growing applications. Active...
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$123.59
Active Air climate control products are available for a variety of indoor growing applications. Active...
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$99.95
The Hyper Fan® Speed Controller is extremely easy to use. Set the two dials and...
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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...
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$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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$34.95
MyCO2 – Mycelium Derived Carbon Dioxide are CO2 bags perfected. Unlike all the other CO2...
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$34.95
MyCO2 – Mycelium Derived Carbon Dioxide are CO2 bags perfected. Unlike all the other CO2...
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$74.95
pH sampling assembly, allows for more accurate readings. Sampling kit includes a submersible pump, 3/4"...
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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...
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$399.95
With a DPC-8000 240 Volt lighting controller from Powerbox, you can control up to eight...
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$759.00
Flipbox® LSM-12 is 6 ballast, 12 light Flipbox® that allows you to run 12 lights...
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$999.95
The Flipbox® LSM-16 is 8 ballast, 16 light Flipbox® that allows you to run 16...
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$1,159.00
The Flipbox® LSM-20 is 10 ballast, 20 light Flipbox that allows you to run 20...
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$579.00
The Flipbox® LSM-8 is 4 ballast, 8 light Flipbox® that allows you to run 8...
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$174.00
The original Powerbox® Flipbox® is an individual light switching module that allows an individual ballast...
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$37.95
The DuctStat Temperature Sensitive SwitchTM will turn a device on or off due to temperature...
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$15.26
15 foot sensor extension cable for use with the Atlas 8 CO2 Monitor and Controller...
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$26.96
Replacement burners, A/C power supply and hose/regulators for Ares LP and NG CO2 Generators.
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$44.96
Replacement burners, A/C power supply and hose/regulators for Ares LP and NG CO2 Generators.
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$10.76
Replacement burners, A/C power supply and hose/regulators for Ares LP and NG CO2 Generators.
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$52.16
Replacement burners, A/C power supply and hose/regulators for Ares LP and NG CO2 Generators.
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$10.76
Replacement burners, A/C power supply and hose/regulators for Ares LP and NG CO2 Generators.
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$384.95
Replacement sensor for Atlas 1
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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