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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$400.00
Designed by experts in lamp-ballast compatibility, the Eye Hortilux Gold Series e-Ballasts provide consistent, stable...
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$250.00
Designed by experts in lamp-ballast compatibility, the Eye Hortilux Gold Series e-Ballasts provide consistent, stable...
+ Quick Look
$270.95
Galaxy Digital Logic Ballasts comes with a Green LED digital display for easy identification of...
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$234.95
The Galaxy Grow Amp 1000 Watt ballast can operate a 1000 watt lamp at 400...
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$268.95
The Galaxy Grow Amp 1000 Watt ballast can operate a 1000 watt lamp at 400...
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$216.95
Galaxy® Grow Amp ballasts are engineered to properly power every major brand lamp in the...
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$229.95
The Galaxy® LEC™ brand technology 315 ballast is optimized for cutting edge Light Emitting Ceramic®...
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$229.95
The Galaxy® LEC™ brand technology 315 ballast is optimized for cutting edge Light Emitting Ceramic®...
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$216.95
This Galaxy® Select-A-Watt® ballast can operate a 1000 watt lamp at 600, 750, 1000 watts...
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$659.95
• INCLUDES A HORTILUX LU1000 SUPER HPS BULB• CLEAN COOL TECHNOLOGY• LOW FREQUENCY, SQUARE WAVE FORM•...
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$260.95
The revolutionary Nanolux dimmable digital ballast is a premier choice for your garden. Available in...
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$346.45
The Nanolux Flip ballast utilizes the latest "Nano-Alter" digital technology allowing the operation of two...
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$194.35
The revolutionary Nanolux dimmable digital ballast proves that good things do come in small packages....
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$294.95
Our Phantom Digital 750W Electronic Dimmable Ballast is part of the most rigorously tested ballast...
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$429.95
Phantom double-ended technology drives maximum PAR value! The engineering excellence of Phantom ballasts is now...
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$439.99
Phantom double-ended technology drives maximum PAR value! The engineering excellence of Phantom ballasts is now...
+ Quick Look
$0.00
Phantom double-ended technology drives maximum PAR value! The engineering excellence of Phantom ballasts is now...
+ Quick Look
$439.99
Phantom double-ended technology drives maximum PAR value! The engineering excellence of Phantom ballasts is now...
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$289.95
We listened and learned from your input - now our Phantom Digital 1000W/240V Electronic Dimmable...
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$299.95
The Phantom II Digital Ballast takes the reliability and engineering superiority of the original Phantom...
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$289.95
The Phantom II Digital Ballast takes the reliability and engineering superiority of the original Phantom...
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$249.95
The Phantom II Digital Ballast takes the reliability and engineering superiority of the original Phantom...
+ Quick Look
$229.95
The Phantom CMh 315W ballast is a remotely operated, low frequency, square-wave digital ballast designed specifically...
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$209.99
The Phantom PHB2040 Digital Ballast was developed from our popular Phantom II ballast line. It retains...
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$288.00
Use halide for growing and sodium for flowering, all in the same system! Hydrofarm's Powerhouse...
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$299.00
The Powerhouse is packed with features which make it the most advanced electromagnetic HID ballast...
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$261.00
$234.99The Powerhouse is packed with features which make it the most advanced electromagnetic HID ballast...
+ Quick Look
$320.00
The Powerhouse is packed with features that makeit the most advanced electromagnetic HID ballast on the...
+ Quick Look
$300.00
Use halide for growing and sodium for flowering, all in the same system! Hydrofarm's Powerhouse...
+ Quick Look
$223.00
The Powerhouse is packed with features which make it the most advanced electromagnetic HID ballast...
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$210.00
The Powerhouse is packed with features which make it the most advanced electromagnetic HID ballast...
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$309.00
The Powerhouse is packed with features which make it the most advanced electromagnetic HID ballast...
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$269.95
Quantum 1000W Dimmable 120/240vac Ballasts are designed to meet the most demanding requirements of indoor gardeners....
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$159.95
Quantum 400W Dimmable Ballast The Quantum Dimmable Ballast brings quality, efficiency, and high intensity illumination to your...
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$184.95
Quantum 600W Dimmable 120/240vac Ballasts are designed to meet the most demanding requirements of indoor gardeners....
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$139.95
Get more ballast for your buck with the SG Lite, which is light on price...
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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