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
+ Quick Look
$40.00
One of a kind in the industry. Olympus is derived from micronized limestone designed to...
+ Quick Look
$14.00
One of a kind in the industry. Olympus is derived from micronized limestone designed to...
+ Quick Look
$23.95
Everything you need to clean, hydrate and calibrate pH probes as well as clean and...
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$25.97
ORP standard solutions allow you to test the precision of ORP electrodes. For example, by...
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$74.95
pH sampling assembly, allows for more accurate readings. Sampling kit includes a submersible pump, 3/4"...
+ Quick Look
$14.09
Technaflora's pH Up and pH Down enable the gardener to moderate and maintain optimum pH...
+ Quick Look
$24.17
Technaflora's pH Up and pH Down enable the gardener to moderate and maintain optimum pH...
+ Quick Look
$47.66
HI 99104 is an ideal pocket tester designed with a 0.01 pH resolution and two...
+ Quick Look
$12.08
Technaflora's pH Up and pH Down enable the gardener to moderate and maintain optimum pH...
+ Quick Look
$46.35
Technaflora's pH Up and pH Down enable the gardener to moderate and maintain optimum pH...
+ Quick Look
$220.46
Experience ease and simplicity in taking pH, µS/cm, ppm (mg/L), and temperature measurements with this...
+ Quick Look
$17.06
Hanna's buffer solutions are made from established formulas and are standardized with a pH meter...
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$17.06
All Hanna solution bottles come with a pH Vs. temperature chart together with the production...
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$48.99
Primo testers provide a fast and dependable way to measure the total dissolved solids or...
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$106.95
This replacement probe supports the combination pH electrode for field applications. The HI 9026 is...
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$34.95
Salinity (NaCI) Calibration solution 30G/L
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$110.00
Handy for direct pH testing of soils or pH soil solutions. The non-refillable Bluelab Soil...
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$18.86
Single-dose sachets are quick and easy to use. Each sealed, light tight sachets holds just...
+ Quick Look
$18.86
Single-dose sachets are quick and easy to use. Each sealed, light tight sachets holds just...
+ Quick Look
$17.06
Hanna storage solutions are prepared with high-grade potassium chloride and potassium hydrogen phthalate by titration...
+ Quick Look
$54.08
Technaflora's pH Up and pH Down enable the gardener to moderate and maintain optimum pH...
+ Quick Look
$46.35
Technaflora's pH Up and pH Down enable the gardener to moderate and maintain optimum pH...
+ Quick Look
$28.21
Technaflora's pH Up and pH Down enable the gardener to moderate and maintain optimum pH...
+ Quick Look
$24.17
Technaflora's pH Up and pH Down enable the gardener to moderate and maintain optimum pH...
+ Quick Look
$12.08
Technaflora's pH Up and pH Down enable the gardener to moderate and maintain optimum pH...
+ Quick Look
$46.35
Technaflora's pH Up and pH Down enable the gardener to moderate and maintain optimum pH...
+ Quick Look
$24.17
Technaflora's pH Up and pH Down enable the gardener to moderate and maintain optimum pH...
+ Quick Look
$12.08
Technaflora's pH Up and pH Down enable the gardener to moderate and maintain optimum pH...
+ Quick Look
$115.16
Conductivity and Total Dissolved Solids measurements have never been easier. DiST's ease-of-use, in combination with...
+ Quick Look
$99.86
The pHep® 4 tester is for users that require the greatest accuracy and features while...
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$17.96
Have you ever had your water analyzed? The hydroponics water test kit gives growers an...
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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