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Seachem Flourish Phosphorus 500ml
Seachem Flourish Phosphorus 500ml
Seachem Flourish Phosphorus 500ml
Seachem Flourish Phosphorus 500ml
Seachem Flourish Phosphorus 500ml
Seachem Flourish Phosphorus 500ml

Seachem Flourish Phosphorus 500ml

Seachem Flourish Phosphorus 500ml

$17.00

(140 reviews)

Phosphorus additive for planted aquariums. Phosphorus is one of the three essential elements that plants need. Flourish Phosphorus is a safe additive (4500 mg/L) of potassium phosphate that simplifies phosphate dosing. Since it is nitrate-free, it can be dosed according to the plants' needs without the risk of overdose. Flourish Phosphorus will enhance and accelerate plant growth without promoting algae growth. As shrimp and snails are often kept in planted aquariums, Flourish Phosphorus is safe for invertebrates. Ideal for heavily planted aquariums, such as Dutch-style tanks. 500 ml treats 37,500 liters.

Phosphorus additive for planted aquariums. Phosphorus is one of the three essential elements that plants need. Flourish Phosphorus is a safe additive (4500 mg/L) of potassium phosphate that simplifies phosphate dosing. Since it is nitrate-free, it can be dosed according to the plants' needs without the risk of overdose. Flourish Phosphorus will enhance and accelerate plant growth without promoting algae growth. As shrimp and snails are often kept in planted aquariums, Flourish Phosphorus is safe for invertebrates. Ideal for heavily planted aquariums, such as Dutch-style tanks. 500 ml treats 37,500 liters.

(140 reviews)

Phosphorus additive for planted aquariums. Phosphorus is one of the three essential elements that plants need. Flourish Phosphorus is a safe additive (4500 mg/L) of potassium phosphate that simplifies phosphate dosing. Since it is nitrate-free, it can be dosed according to the plants' needs without the risk of overdose. Flourish Phosphorus will enhance and accelerate plant growth without promoting algae growth. As shrimp and snails are often kept in planted aquariums, Flourish Phosphorus is safe for invertebrates. Ideal for heavily planted aquariums, such as Dutch-style tanks. 500 ml treats 37,500 liters.

Phosphorus additive for planted aquariums. Phosphorus is one of the three essential elements that plants need. Flourish Phosphorus is a safe additive (4500 mg/L) of potassium phosphate that simplifies phosphate dosing. Since it is nitrate-free, it can be dosed according to the plants' needs without the risk of overdose. Flourish Phosphorus will enhance and accelerate plant growth without promoting algae growth. As shrimp and snails are often kept in planted aquariums, Flourish Phosphorus is safe for invertebrates. Ideal for heavily planted aquariums, such as Dutch-style tanks. 500 ml treats 37,500 liters.

$17.00 - $38.90

in 22 offers

The lowest price for Seachem Flourish Phosphorus 500ml right now is $17.00 at aquateesfishland.com.au, compared across 22 retailers.

The all-time low was $15.30 on 29 Nov 2025 — today's price is 11% above the lowest ever. That's a little above the best price we've seen.

Prices last updated 12 May 2026.

Size:

100 ml
250 ml

Price comparison

Price data powered by pricesAPI.io

Last updated at 12/05/2026 14:53:10

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
aquateesfishland.com.au

$17.00

Seachem Flourish Phosphorous 500ml

peta2z.com

$17.22

Seachem, Flourish Phosphorous, 500 mL

Delivery $26.37

Oasis Aquarium

$22.00

Seachem Flourish Phosphorus 500ml

Free delivery between 15–22 May

Nature Aquariums

$22.95

Seachem Flourish Phosphorus 500ml

Aquaristic Online

$23.00

Seachem Flourish Phosphorus 500ml - Aquaristic Online

Delivery $14

DH Aquarium

$24.50

Flourish Phosphorus 500ml

Aquatic Supplies Australia

$24.95

Seachem Flourish Phosphorus - AquaticSupplies.com.au 500ml

Delivery between 18–21 May $11.95

Hurstville Aquarium

$24.95

Seachem Flourish Phosphorus 500ml

Delivery between 18–22 May $9.50

Iwaquariums

$24.95

Seachem Flourish Phosphorus 500ml - IWAquariums

Delivery $9.90

eBay.com.au

$24.99

Seachem Flourish Phosphorus 500ml

Free delivery

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Reviews

3 March 2020

originally posted on pro-shrimp.co.uk

Top quality product and goes a long way.Bought in response to cure a green spot algae outbreak, due to very low phosphate level.

29 October 2019bernardm.

originally posted on shopee.ph

The bottles arrived in bad shape but its only because I chose BAE own packaging shipment option. Ill avoid that next time I order.Pero wala naman leaks and the bottles were sealed. Thank you!

Review of Flourish Phosphorus
9 December 2022Reviewed by Pond Planet Ltd customer

originally posted on pond-planet.co.uk

never received them, so cant comment

Specification

Liquid volume500 Millilitres
Item formLiquid
Target speciesShrimp
Product dimensions19.3 x 5.59 x 3.56 cm; 521.63 Grams
Country of originUSA

Price comparison

Updated 28 days ago
Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
aquateesfishland.com.au

$17.00

Seachem Flourish Phosphorous 500ml

peta2z.com

$17.22

Out of stock

Seachem, Flourish Phosphorous, 500 mL

Delivery $26.37

Oasis Aquarium

$22.00

Seachem Flourish Phosphorus 500ml

Free delivery between 15–22 May

Nature Aquariums

$22.95

Seachem Flourish Phosphorus 500ml

Aquaristic Online

$23.00

Seachem Flourish Phosphorus 500ml - Aquaristic Online

Delivery $14

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Reviews

3 March 2020

Top quality product and goes a long way.Bought in response to cure a green spot algae outbreak, due to very low phosphate level.

originally posted on pro-shrimp.co.uk
29 October 2019

The bottles arrived in bad shape but its only because I chose BAE own packaging shipment option. Ill avoid that next time I order.Pero wala naman leaks and the bottles were sealed. Thank you!

bernardm. originally posted on shopee.ph
Review of Flourish Phosphorus
9 December 2022

never received them, so cant comment

Reviewed by Pond Planet Ltd customer originally posted on pond-planet.co.uk
Seachem Flourish Phosphorus - 500 ml
4 March 2022

A genuine product & you will be needing this for planted tank. It's at best price @ IndieFur.

Tirthankar C. originally posted on indiefur.com
ronseal product
3 July 2019

adding to my reef due to zero phosphates causing nitrates to rise. Once I got the dosage figured out nitrates are dropping and I now get a phosphate reading on my hanna checker. Also corals all now have new growth tips so must be happy with some phosphate in the system.

shedbison originally posted on ebay.com

Specification

Liquid volume500 Millilitres
Item formLiquid
Target speciesShrimp
Product dimensions19.3 x 5.59 x 3.56 cm; 521.63 Grams
Country of originUSA

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