Horticulture Source » Gardening & Hydroponics Store » Humboldt Nutrients: Sea Mag 2.5 gal. [hf-HNS415]   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
High Yields Lock Down Pads, 3", pack of 15
hf-LDP03
High Yields Lock Down Pads, 3", pack of 15
$5.31
Quick Find
Quick Find
Use keywords to find the product you are looking for.
Advanced Search

Information
Who else is online?
There are 23 guests online.
Ads
Product not found!
Continue
New Products For September
hf-ROSSI2.5G Soul Synthetics Infinity 2.5 Gal
hf-ROSSI2.5G
Soul Synthetics Infinity 2.5 Gal

$96.60
MFT45 7 in 1 Gardening Multi Tool w/ Case
MFT45
7 in 1 Gardening Multi Tool w/ Case

$7.55
eco-5413 Black/White Poly, 4 mil - 100' x 10'
eco-5413
Black/White Poly, 4 mil - 100' x 10'

$58.73
FE823 Fish-Mix - 5 Liter
FE823
Fish-Mix - 5 Liter

$75.18
732896 Bluelab pH 7.0 Calibration Solution 500ml (6/Cs)
732896
Bluelab pH 7.0 Calibration Solution 500ml (6/Cs)

$8.42

FA152
8" Hose Clamp

$4.67
CO220 Replacement Solenoid.
CO220
Replacement Solenoid.

$37.71
747600 Hydro Flow / Netafim Techline EZ .26 GPH Flow - 18 in Dripper Spacing - 1,000 Ft Coil (Special Order)
747600
Hydro Flow / Netafim Techline EZ .26 GPH Flow - 18 in Dripper Spacing - 1,000 Ft Coil (Special Order)

$210.09
dl-500100 AquaVita 100 Water Pump
dl-500100
AquaVita 100 Water Pump

$5.49
PO1361 Plastic Pot - Green. 4.125 in
PO1361
Plastic Pot - Green. 4.125 in

$0.61
700520 Lux Digital Thermostat (10/CS)
700520
Lux Digital Thermostat (10/CS)

$41.34
hf-AARO620 20" Carbon Block Filter
hf-AARO620
20" Carbon Block Filter

$19.98
hf-ACY1288 Y Connector 12" x 8" x 8"
hf-ACY1288
Y Connector 12" x 8" x 8"

$22.05
760407 FloraFlex 60 1/4 in 4 GPH Long Plunge Drippers (1=6/Bag)
760407
FloraFlex 60 1/4 in 4 GPH Long Plunge Drippers (1=6/Bag)

$4.69
hf-HG5GL 5 Gallon Bucket Lid, Black, Pack of 10
hf-HG5GL
5 Gallon Bucket Lid, Black, Pack of 10

$16.91
eco-2055 BLOOM "R" 10 lb. Box
eco-2055
BLOOM "R" 10 lb. Box

$45.67
738360 Ideal H2O Hybrid Sediment/Carbon Filter (12/Cs)
738360
Ideal H2O Hybrid Sediment/Carbon Filter (12/Cs)

$15.53
hf-RCT100S 100 Gal Smart Pot 50"x12" Squat Size TAN
hf-RCT100S
100 Gal Smart Pot 50"x12" Squat Size TAN

$28.95
hf-MCIRONQT MaxiCrop Plus Iron 2% qt
hf-MCIRONQT
MaxiCrop Plus Iron 2% qt

$10.96
eco-2047 GROW "R" 10 lb. Box
eco-2047
GROW "R" 10 lb. Box

$45.67
dl-501056 AquaVita 1056 Water Pump
dl-501056
AquaVita 1056 Water Pump

$43.65
J6-03 Steel Hoe with 5 x 3.25" blade head and 15" ash handle
J6-03
Steel Hoe with 5 x 3.25" blade head and 15" ash handle

$10.86
dl-GOSF-2520-PL Growonix Replacement Sediment Pleated Filter for Slim Scrubber
dl-GOSF-2520-PL
Growonix Replacement Sediment Pleated Filter for Slim Scrubber

$20.06
736972 6IN X 25FT SILVER/BLK DUCTING W/O CLAMP
736972
6IN X 25FT SILVER/BLK DUCTING W/O CLAMP

$14.15
725425 Black Square Pot 8 Gallon
725425
Black Square Pot 8 Gallon

$4.21
eco-5061 ActiveAqua Air 2 outlets
eco-5061
ActiveAqua Air 2 outlets

$10.58
hf-RCT1000 1,000 Gal Smart Pot 111"x24" TAN (SPECIAL ORDER) Case of 7
hf-RCT1000
1,000 Gal Smart Pot 111"x24" TAN (SPECIAL ORDER) Case of 7

$110.37
hf-PHDEKTS5 Phantom Commercial DE Enclosed Lighting System with USB Interface, 480V
hf-PHDEKTS5
Phantom Commercial DE Enclosed Lighting System with USB Interface, 480V

$407.09
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
Humboldt Nutrients
Humboldt Nutrients 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
Vortex Inline Fan 6 in 452 CFM
Vortex Inline Fan 6 in 452 CFM
$149.44
$142.95
Similar Products
Pure Granular Bloom 50 lb 1-5-4
hf-BCNSOPB50
Pure Granular Bloom 50 lb 1-5-4
$37.38

Pro Silicate  1 lt
hf-GTPROS1L
Pro Silicate 1 lt
$12.05

EARTH JUICE™ META-K 0-0-10 - QUART (12/CASE)
732835
EARTH JUICE™ META-K 0-0-10 - QUART (12/CASE)
$9.41

GHBB® FLORA GRO™ 2.5 GALLON (2/CASE)
718050
GHBB® FLORA GRO™ 2.5 GALLON (2/CASE)
$43.90

Sweet & heavy Finis, 1 qt (Special Order)
hf-HOSHFQT
Sweet & heavy Finis, 1 qt (Special Order)
$11.80

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