Horticulture Source » Gardening & Hydroponics Store » HydroFarm: 4.0 500 ML Calibration Solution [hf-HD4CAL500]   Mobile   Secure |  My Account | Cart Contents | Checkout )
You have JavaScript disabled or are using a browser which does not support it. Please turn on JavaScript or consider upgrading or switching your web browser, e.g. FireFox or Opera.
Celebrating 10 Years of Service to Gardeners in 91 Countries! Thank you for your business!
Categories
* Lamps / Tubes / Bulbs ++ (526)
* Lighting Systems ++ (1113)
* Nutrients & Supplements (4327)
* Composters & Compost Tea Brewing (43)
* Organic Gardening (521)
* Leaf Shines & Washes (104)
* Pest & Disease Control (563)
* Cloning & Propagation (425)
* Grow Systems ++ (584)
* Meters, Timers & Instruments ++ (679)
* Pots / Containers (1017)
* Pumps, Irrigation & Watering Supplies ++ (1562)
* Grow Media (572)
* Plant Seeds (18)
* Environmental Control ++ (1946)
* Greenhouses (89)
* Grow Rooms / Tents (167)
* Reflective / B&W Films (132)
* Garden Accessories ++ (923)
* Hand Tools ++ (524)
* Gardening Books & DVDs (59)
* Growing Apparel (14)
Manufacturers more
What's New? more
Trellis Netting, 4' x 8', 6" Mesh
hf-HGN84
Trellis Netting, 4' x 8', 6" Mesh
$3.13
Quick Find
Quick Find
Use keywords to find the product you are looking for.
Advanced Search

Information
Who else is online?
There are 33 guests online.
Ads
Product not found!
Continue
New Products For September
PU151 Plastic Valve. 1/2 in
PU151
Plastic Valve. 1/2 in

$3.54
hf-RPWD10005 Chameleon Container 5 Gal Woodland Digital
hf-RPWD10005
Chameleon Container 5 Gal Woodland Digital

$3.16
dl-600165 AquaVita Commercial Air Pump 65L/min
dl-600165
AquaVita Commercial Air Pump 65L/min

$40.06
724405 GROW BAGS 3 GALLON 0.068MM (25/BOX) AVAILABLE IN CASE QUANTITIES ONLY
724405
GROW BAGS 3 GALLON 0.068MM (25/BOX) AVAILABLE IN CASE QUANTITIES ONLY

$5.46
hf-HL14375 Merlin-GP Eco-Green Drain Elbow 3/8" QC SPO
hf-HL14375
Merlin-GP Eco-Green Drain Elbow 3/8" QC SPO

$12.94
742175 HydroFlow Garden Hose Cap Assembly 3/4" (case of 100)
742175
HydroFlow Garden Hose Cap Assembly 3/4" (case of 100)

$42.55
FE165 Kelp Meal. 5 lb
FE165
Kelp Meal. 5 lb

$16.94
hf-AN45755 TopHat Grommet 0.75" (19mm) Bag of 25
hf-AN45755
TopHat Grommet 0.75" (19mm) Bag of 25

$8.94

QV8-BLADE
Replacement Cutting Blade for Zenport QV8 and ARS V8 (ARS V8 Blade Kit)

$8.32
hf-HNMB404 Master-B 16 oz.
hf-HNMB404
Master-B 16 oz.

$9.61
hf-BACORD 16/3 120V Heavy Duty Power Cord 8' UL
hf-BACORD
16/3 120V Heavy Duty Power Cord 8' UL

$4.95
hf-VCBC5 5 Gallon Vermi T Bio-Cartridge
hf-VCBC5
5 Gallon Vermi T Bio-Cartridge

$55.66
hf-IGS4HEPA Organic Air 4" HEPA air filter
hf-IGS4HEPA
Organic Air 4" HEPA air filter

$60.38
CSK7023 Deluxe 4"  Blade Folding Crusader Knife
CSK7023
Deluxe 4" Blade Folding Crusader Knife

$4.43
MI413 Mylar - 1mil. 50 in x 25 ft
MI413
Mylar - 1mil. 50 in x 25 ft

$13.81
hf-BCFTBK50 Ebb & Flow fill/drain fitting 1/2"
hf-BCFTBK50
Ebb & Flow fill/drain fitting 1/2"

$1.27
732160 GHBB® DIAMOND NECTAR™ - QUART (12/CASE)
732160
GHBB® DIAMOND NECTAR™ - QUART (12/CASE)

$10.91
dl-905516 Heavy Duty Pot Saucers 16"
dl-905516
Heavy Duty Pot Saucers 16"

$1.75
dl-173712 3' Hanging Dry Net with clips
dl-173712
3' Hanging Dry Net with clips

$30.03
hf-KSH350M LED Grow Light 350, Magenta
hf-KSH350M
LED Grow Light 350, Magenta

$304.72
901612 2 FT GREEN T5 HO Lamp 24W 2' (25/Case)
901612
2 FT GREEN T5 HO Lamp 24W 2' (25/Case)

$7.19
719740 Ful-Humix (was HUMISOLVE) 100 GRAMS 24/CS
719740
Ful-Humix (was HUMISOLVE) 100 GRAMS 24/CS

$4.81
eco-5988 Dirt Pot - 3 Gallon
eco-5988
Dirt Pot - 3 Gallon

$2.09
hf-ML21428 Phosphate Supplement Gal
hf-ML21428
Phosphate Supplement Gal

$48.67
dl-491500 1500W HypoTek Digital Ballast MH/HPS (240V ONLY)
dl-491500
1500W HypoTek Digital Ballast MH/HPS (240V ONLY)

$258.42
717976 RAW Microbes Grow Stage 10 lb (1/Cs)
717976
RAW Microbes Grow Stage 10 lb (1/Cs)

$265.65
hf-HOH84023 EJ Nat Down 7.8lb (4/cs)
hf-HOH84023
EJ Nat Down 7.8lb (4/cs)

$44.52
hf-HOJ03962 Verde Fire Bloom 2lb
hf-HOJ03962
Verde Fire Bloom 2lb

$8.82
Shopping Cart more
0 items - Add an item to the cart to get a quote!
 Get Quote by adding products to the cart!
Shop By Price
Manufacturer Info
HydroFarm
HydroFarm Homepage
Other products
Reviews more
Write ReviewWrite a review on this product!
BizRate Customer Certified (GOLD) Site - HorticultureSource.com -Specialty Gardening Supply Reviews at Bizrate


Tell A Friend
 
Share what you've found! Email a link to this page to friends, family, and colleagues!
Specials more
10' LAMP EXTENSION CORD - 14 GAUGE
10' LAMP EXTENSION CORD - 14 GAUGE
$18.34
$16.59
Similar Products
Nectar for the Gods Hades Down 5 Gallon
746310
Nectar for the Gods Hades Down 5 Gallon
$143.75

Electrolyte Solution
hf-HI7071
Electrolyte Solution
$42.06

Dyna-Gro PH Up
dl-DGPHU-032
Dyna-Gro PH Up
$9.44

X Nutrients pH Down (1 Gallon)
dl-xnHPHDOWN-1G
X Nutrients pH Down (1 Gallon)
$15.93

pH Up 8oz Base
hf-GH1521
pH Up 8oz Base
$52.03

Languages
English Deutsch Español
Currencies
Ads
Amazon Ad
Matched Content
Ads

Customer Service

 

Shopping Help

 

My Account

 

Tools & Resources

BizRate Customer Certified (GOLD) Site - HorticultureSource.com -Specialty Gardening Supply Reviews at Bizrate ShopWiki Certified Store Official PayPal Seal
Merchant Services
Secured by RapidSSL 100% Satisfaction Guaranteed  Celebrating 10 Years of Service to Gardeners in 91 Countries! Thank you for your business!  Proud Hydro for Hunger Participant
APO/FPO addresses are no problem.
International orders are always welcome!
UPSFedExUSPS OnTrac CalOver EstesR+LSouthEasternSAIA
Copyright © 2005 — 2016 Usisu, Inc.: Conditions of Use VISAMasterCardAmerican ExpressDiscoverDiners ClubJBCPayPal Money Order