Seachem Flourish Phosphorus - Plant Macro Nutrient

★★★★☆ 4.0 28 reviews

US$3.60
Price when purchased online
Free shipping Free 30-day returns

Sold and shipped by postalesgrancanaria.com
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here.
US$3.60
Price when purchased online
Free shipping Free 30-day returns

How do you want your item?
You get 30 days free! Choose a plan at checkout.
Shipping
Arrives Aug 3
Free
Pickup
Check nearby
Delivery
Not available

Sold and shipped by postalesgrancanaria.com
Free 30-day returns Details

Product details

Management number 234848875 Release Date 2026/07/02 List Price US$3.60 Model Number 234848875
Category

 

Flourish Phosphorus™

Phosphorus is one of the main three macro nutrients (nitrogen, phosphorous, potassium: NPK) required by plants and can often become the limiting factor to growth in a flourishing system. Flourish Phosphorus™ is a safe solution (4,500 mg/L phosphate) of potassium phosphate that takes the guess work out of phosphate dosing. Unlike competing products that mix nitrate and phosphate in a fixed ratio, Flourish Phosphorus™ (being nitrate free) allows you to dose phosphorus according to the needs of your plants without the risk of overdosing nitrates. When used as directed, Flourish Phosphorus™will enhance and accelerate the growth of aquatic plants without enhancing algae growth. For maximum benefit, use with Flourish Nitrogen™ and Flourish Potassium™. Flourish Phosphorus™ is safe for invertebrates such as shrimp.

  • Phosphorus supplement for the planted aquarium
  • A safe 4500 mg/L solution of potassium phosphate
  • Takes the guesswork out of phosphate dosing
Seachem Treats - Gallons BFA Item #
Flourish Phosphorus 250 mL 500 - 5,000 SC01960
Flourish Phosphorus 500 mL 1,000 - 10,000 SC01930


Directions

BEGINNER: Use 2.5 mL (half a cap) for each 80 L (20 US gallons) once or twice a week or as needed in response to signs of phosphorus deficiency (e.g. stunted growth, plant dark green).

EXPERT: The beginner dose raises phosphorus by 0.05 mg/L (0.15 mg/L phosphate). The ideal phosphate level will vary, but generally ranges from 0.15–1.0 mg/L. Use MultiTest™: Phosphate to monitor phosphate levels. To target a specific phosphate increase, dose according to the following formula: 0.8vp=m, where v= volume of tank in gallons, p=desired phosphate increase and m=volume of product to use in mL. For example to raise 20 gallons to 0.1 mg/L phosphate you would use: 0.8*20*0.1=1.6 mL.


Correction of product information

If you notice any omissions or errors in the product information on this page, please use the correction request form below.

Correction Request Form

Customer ratings & reviews

4 out of 5
★★★★☆
28 ratings | 11 reviews
How item rating is calculated
View all reviews
5 stars
75% (21)
4 stars
8% (2)
3 stars
4% (1)
2 stars
2% (1)
1 star
11% (3)
Sort by

There are currently no written reviews for this product.