Pro Shrimp

Seachem Flourish Phosphorus

Seachem Flourish Phosphorus - Main image
$3.89 $5.99 In stock

Category: Aquarium Fertiliser

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 Phosphorusis 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. 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 rais

Confirm the order

Check the specification, quantity and total at checkout.

Before work begins

Factor in processing and transit time when planning your order.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy
Refund requests

Use your order reference when explaining the issue to the store.

Please contact us for the refund processing timeframe before returning an item.

View policy
Delivery for your items

Check the destination and shipping charge before payment.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy
Sending an item back

Ask the store for instructions before packing and returning the item.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

View policy

Customer Reviews (5.0 / 5 · 4 reviews)

Jason Z. ★★★★★

My Amazon swords were melting despite good lighting and CO2—this phosphorus supplement turned them around in under two weeks. The 250ml bottle lasts months in my 55-gallon tank.

Amelia ★★★★★

I’ve been using this in my planted tank for a few weeks and the difference in growth is pretty obvious now. The bottle is concentrated enough that a little goes a long way, which is nice since I don’t have to dose as often.

Aurora ★★★★★

I was skeptical about adding another bottle to my routine, but this phosphorus ended up being the missing piece for my stem plants. The dropper bottle makes dosing in my 20-gallon tank super precise, and new growth is visibly greener within a week.