The store will not work correctly in the case when cookies are disabled.
Bulk Reef Supply Saltwater Logo
Bulk Reef Supply Freshwater Logo

FREE Shipping Over $49

Free Shipping

Orders Over $49 Ship Free

$5.99 economy shipping on orders under $49

Learn More
| Earn Reward Points
Skip to Content
Menu BRS Freshwater
My Cart
    • My Account
    • My Wish List
    • My Orders
    • Address Book
    • Sign Out
    • Reward Points
  • Sign In
Bulk Reef Supply Mobile Menu
Close

Quick Links

  • Deals
  • Gift Cards
  • What's New
  • Education
  • Clearance
  • Open Box
  • PR Rewards
  • Shop Brands
  • FAQs
  • Saltwater
Menu
Fast Shipping Fast Shipping
Sign up to be a Reward Member Earn Reward Points
Returns 365-Day Returns
Experts Aquarium Experts
  • Fast Shipping Fast Shipping
  • Sign up to be a Reward Member Earn Reward Points
  • Returns Risk-Free 365 Day Returns
  • Experts Aquarium Experts
Loading...
Brightwell Aquatics

FlorinGro - Nitrogen Source for Planted Aquariums

Be the first to review this product
Grouped product items
FlorinGro (250 mL)

SKU: 252508

In stock

$8.22 $8.22

- +
FlorinGro (500 mL)

SKU: 252509

In stock

$13.33 $13.33

- +
Add to Wish List
Risk Free 365 Returns

Your Satisfaction Guaranteed With
365 Day Risk Free Returns

No longer need what you ordered? Ordered one too many? We've got your back.


Return new, unopened products in original packaging within 365 days for a full refund.

Under 60 days? No problem. We’ll issue your refund to the original form of payment. Over 60 days? Still no problem. We'll issue your refund in the form of store credit, which you can use like cash on our website.


Return unused, open box products within 30 days.

Open box but still unused? We can help. We’ll issue your refund to the original form of payment minus a small 10% restocking and handling fee.

Some exclusions apply, for more information go to Return & Replacement Details.

Skip to the end of the images gallery
main product photo
Skip to the beginning of the images gallery
Details

Concentrated Nitrogen Source & Growth Accelerant for Planted Tanks

  • Concentrated nitrogen in the form of nitrate
  • For plant growth & long-term health
  • Contains Kelp extract to encourage growth and flowering
  • Formulated using extensive research on aquatic plant nutrient requirements

Plants need nitrogen more than any other major nutrient like phosphorus and potassium. Nitrogen is important for their growth and various metabolic processes. It helps create proteins, amino acids, coenzymes, and nucleic acids in living cells. Nitrogen is also crucial for making chlorophyll through photosynthesis, a process that converts carbon dioxide into carbohydrates to provide energy for plants.

In aquariums, some nitrogen comes from ammonia and ammonium, which are found in fish waste and decomposing organic matter. However, this might not be enough for plants, especially in heavily planted aquariums with bright lights, CO2 supplementation, and few fish. In such cases, nitrogen can become a limiting nutrient for plant growth. It can cause problems like chlorosis, where leaves turn pale, particularly the older ones on the outer edges. Nitrogen deficiency can also lead to smaller and paler new leaves and overall stunted plant growth.

FlorinGro provides nitrogen derived from nitrate compounds. While plants can use ammonium and urea effectively,  these compounds are excluded from FlorinGro because they can harm fish and other non-plant aquarium inhabitants when the aquarium's pH is higher than 7.0. Such nitrogen sources are suitable for botanists and horticulturists working with aquatic plants but not for aquarium use. Nitrogen in FlorinGro is in the form of nitrate and should be maintained at a concentration of less than 20 ppm. Along with nitrogen, magnesium, iron, and potassium are also essential for chlorophyll production. It's recommended to maintain iron levels between 0.05 - 0.10 ppm, magnesium levels around 5 ppm, and potassium levels between 15 - 30 ppm.

 

Instructions & Guidelines

Shake product well before using. The most effective method of using any ion-specific supplement is to determine the ionic concentration in the aquarium prior to supplementing. Maintain the nitrate concentration within a range of 10 - 20 ppm; it is not recommended to exceed 25 ppm nitrate in planted aquaria housing fishes and invertebrates.


Basic: Add 5 ml (1 capful) of product per 50 US-gallons (189.3 L) of aquarium water every other day or as required; this corresponds to 1 ml (~8 drops) per 10 US-gallons (37.9 L). When used in this fashion, 250 ml treats up to 2,500 US-gallons (9,464 L).


Advanced: Determine the nitrate concentration (“[NO3-]”) in the aquarium using an accurate test kit before supplementing. Each ml of FlorinGro will increase the [NO3-] in 1 US-gallon (3.785 L) of water by 17.5 ppm. Each drop (250- and 500-ml cap) will increase the [NO3-] in 1 US-gallon (3.785 L) of water by 2.2 ppm, and the [NO3-] in 20 US-gallons (75.7 L) by 0.11 ppm. If the initial [NO3-] in the aquarium is below 20 ppm, add this product at the maximum rate of 1 ml per 5 US-gallons daily until the desired concentration is attained, then dose daily or weekly as needed (see below). Always attempt to maintain the [NO3-] within a range of +/-2 ppm. To determine the dosing rate of this product once the desired [NO3-] has been acquired, measure the daily rate of nitrate uptake (i.e. the decrease in nitrate) in your aquarium by measuring the aquarium's [NO3-] at the same time each day over a one- to two-week period. To determine the daily dosing rate (preferable to weekly dosing) for nitrate maintenance: estimate the volume of water in the entire aquarium system; divide the daily decrease in [NO3-] by 17.5; multiply this number by the volume of water in the system to get the daily dosage required (ml) to maintain a stable [NO3-]. Daily dosing maintains a more stable [NO3-] (and more natural environment) than dosing weekly, in which the [NO3-] spikes just after dosing and then gradually decreases throughout the course of the week. Heavily-planted aquaria with intense lighting, CO2 supplementation, and low- to moderate-stocking density of fishes are likely to see the most dramatic results from nitrogen supplementation. Start at a low dosage and increase it as required, but do not overdose regardless of the temptation to do so.

 

Caution: Keep out of reach of children. Not for human consumption.

Guaranteed Analysis: Total Nitrogen (N) as Nitrate (min) 1.50% (444 mg/oz.; 15,000 ppm)

Ingredients: Sodium nitrate, purified water, kelp extract

 

More Information
More Information
SKU FlorinGro - Brightwell Aquatics
Aquarium Type Freshwater
Reviews
Write Your Own Review
You're reviewing:FlorinGro - Nitrogen Source for Planted Aquariums
Your Rating
Product Questions

Product Questions

No questions yet. Be the first to ask the question!

SIGN UP FOR THE BULK REEF SUPPLY NEWSLETTER

Don’t be the last to know this holiday season about sales, specials, new products, and more!

Sign Up Now
BRS Fresh https://media2.cdn.bulkreefsupply.com/media/logo/stores/1/BRS-Logo-498x174.png https://fresh.bulkreefsupply.com/
BRS Fresh Bulk Reef Supply
  • Facebook Opens a new window
  • Youtube Opens a new window
  • Instagram Opens a new window
  • TikTok Opens a new window

Contact

  • 763-432-9691

  • 8am - 6pm CT M-Th
    9am - 4pm CT Friday
  • support@bulkreefsupply.com
  • 6325 Sandburg Road, Suite 200
    Golden Valley, MN 55427 US

Bulk Reef Supply
About Us
Customer Service
Careers
Wholesale Customers
Instructions
Terms & Conditions
Customer Center
Preferred Reefer Program
International Shipping
Returns & Replacements
Payment, Pricing & Promos
Shipping & Delivery
APL Star Logo
© 2025 Aperture Pet & Life. All Rights Reserved.
Privacy Policy

item(s) Added to Your Cart

Product Name

View Cart Checkout Now
You may also like
Super Naturals Substrate - Zen Garden
CaribSea
Super Naturals Substrate - Zen Garden
From: $13.32

Choose Options
Chloral Reset Water Conditioner
Prodibio
Chloral Reset Water Conditioner
From: $4.15

Choose Options
Alg'out Algae Prevention
Prodibio
Alg'out Algae Prevention
From: $3.28

Choose Options
Cholla Wood
Liquid Gardens
Cholla Wood
From: $3.00

Choose Options
AF Water Conditioner
Aquaforest
AF Water Conditioner
From: $7.29

Choose Options
Betta World - Mini Lava Rock (1lb)
Aqua Natural
Betta World - Mini Lava Rock (1lb)
$7.48 $7.48

Pacific Driftwood
Ultum Nature Systems
Pacific Driftwood
Rating:
100%
1 Review
From: $4.99

Choose Options
Aqua Garden/Bright Stone Aquarium Backgrounds
SeaView
Aqua Garden/Bright Stone Aquarium Backgrounds
From: $2.10

Choose Options
Betta World - Jade (1lb)
Aqua Natural
Betta World - Jade (1lb)
$7.48 $7.48

Stainless Steel Straight Spring Scissors
Ultum Nature Systems
Stainless Steel Straight Spring Scissors
From: $29.99

Choose Options

Login and Registration Form

  • Login
  • Register

Registered Customers
If you have an account, sign in with your email address.
Forgot Your Password?
or

Login with Your Social Profile Login with
Continue with Google
Continue with Facebook
Continue with Apple

Personal Information
Sign-in Information
Password Strength: No Password
Back
or

Login with Your Social Profile Login with
Continue with Google
Continue with Facebook
Continue with Apple
  • Forgot Your Password?

Please enter your email address below to receive a password reset link.
Go back