SKU: 34814617319

Seachem Flourish Phosphorus

Sale price$108.45 Regular price$120.50
Save 10%

Pay in installments of $30.12 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 17 - Aug 22

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Seachem Flourish PhosphorusSeachem Flourish Phosphorus Seachem Flourish Phosphorus is a phosphorus supplement for planted aquariums that enhances and accelerates the growth of aquatic plants while being safe for invertebrates and allowing for precise dosing without the risk of overdosing nitrates. Phosphorus supplement for the planted aquarium A safe 4500 mg L solution of potassium phosphate Takes the guesswork out of phosphate dosing Seachem Phosphorus is one of the main three

Seachem Flourish Phosphorus

Seachem Flourish Phosphorus is a phosphorus supplement for planted aquariums that enhances and accelerates the growth of aquatic plants while being safe for invertebrates and allowing for precise dosing without the risk of overdosing nitrates.

  • Phosphorus supplement for the planted aquarium
  • A safe 4500 mg/L solution of potassium phosphate
  • Takes the guesswork out of phosphate dosing

Seachem Phosphorus is one of the main three macronutrients (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 guesswork 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.

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 the 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.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 34814617319

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.7 ★★★★★
Based on 8 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
A
Verified Purchase
A Brown
Natrona Heights, US
★★★★★ 3
Not good quality
Size: Standard (18-Inch), Color: Dark Grey
Comfy, however it’s getting flat an only had it a week
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 27, 2026
L
Verified Purchase
Linda F. Del Valle
Dallas, US
★★★★★ 5
Love this ❤️❤️
Size: Standard (18-Inch), Color: Rose Pink
Love love super comfy soft yet firm Great quality good value the material is sturdy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2026
R
Verified Purchase
RW
Battle Creek, US
★★★★★ 5
Heaven sent
Size: Jumbo (25-Inch), Color: Dark Grey
My back suddenly decided to show me who's the boss. This reading pillow has been a God send! It is substantial without being too hard, soft enough to be comfortable without being too soft, absolutely no lumps! The outside cover is removable to allow for machine washing and is so soft to the touch. There is a handle on the back that makes it easy to move. This has allowed me to be able to sit upright, much appreciated!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
S
Verified Purchase
Sonja Foster
Grantham, US
★★★★★ 5
Huge, super soft, cozy pillow!
Size: Jumbo (25-Inch), Color: Sage
This pillow is awesome! As a plus size person who can't sleep laying flat, the size and support level is perfect. This pillow is huge! The quality is very high, the stitching is precise, and the sage green material is soft and cozy. Great value for the price! I highly recommend this reading pillow!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
G
Verified Purchase
GN
Whiting, US
★★★★★ 5
MUST BUY Item for Breastfeeding Moms
Size: Standard (18-Inch), Color: Dark Grey
MUST GET item for breastfeeding moms. It is a soft pillow with a removable washable cover. The material is like a suede, which can make it hot to lean on if you typically feel hot when breastfeeding or sleeping. It allows you to sit up straight while in bed with great support.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026

recommand products