Description
xOverview
Red Sea NO3:PO4-X is a 500ml bottle of biological nitrate and phosphate reducer designed for reef aquariums. Part of Red Sea's Fish Pharm line, this product is manufactured in the United States and packaged for hobbyists who value a practical, biology-based approach to nutrient management.
What it does for your reef
In reef systems, dissolved nitrogen and phosphate compounds can accumulate from feeding, waste, and decaying matter. NO3:PO4-X targets these nutrients through a biological mechanism intended to help lower their levels. By reducing excess nutrients, the product aims to support stable water chemistry, encourage healthy coral color, and help keep nuisance algae in check. This is a gentle, biology-based option that fits into everyday reef-keeping routines.
- Biological reduction of nitrates and phosphates to help balance nutrients.
- Potential for improved water clarity as nutrient levels stabilize.
- Algae management support that complements regular maintenance.
- Designed to work alongside other Red Sea products and common reef-husbandry practices.
Real-world use cases
Imagine a mixed reef with SPS, LPS, and soft corals. As nutrients settle into a healthier range, corals may display more extended polyp extension and vibrant coloration, while algae growth remains manageable with consistent dosing and monitoring. Tank owners often notice clearer water and a calmer, more stable display over weeks of careful use.
How to use
Begin with a careful, incremental dosing approach. Monitor nitrate and phosphate indicators, and adjust dosing to fit your tank’s response. Pair NO3:PO4-X with regular water changes and routine testing for best results.
- Read the label and start with the recommended dose for your tank size.
- Wait several days between adjustments to observe changes in water chemistry.
- Maintain stable parameters (temperature, salinity, lighting) to support nutrient management.
Product specs & origin
Country of origin: United States. Package dimensions: 3 x 3 x 8 inches. This 500ml bottle is designed for reef-keepers who prefer a biology-based approach to nutrient management within Red Sea’s Fish Pharm portfolio.
FAQ
Q: What does Red Sea NO3:PO4-X do in a reef tank?
A: It targets nitrates and phosphates biologically to help balance nutrients and support coral health, while limiting nuisance algae.
Q: How should I use Red Sea NO3:PO4-X?
A: Follow label directions, dose gradually, monitor nutrient levels, and maintain stability with regular water changes and testing.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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