NO3:PO4-X (Nitrate & Phosphate Reducer) - Red Sea
Buy now, pay later
Split your purchase into smaller payments with the provider you prefer. Pick your plan at checkout.
Checking out with Shop Pay? The Shop Pay screen only offers Shop Pay Installments. To pay with PayPal, Klarna, or Affirm, select Check out as guest to see every payment option, or use the PayPal button in your cart.
Shop Pay Installments
- 4 interest-free payments every 2 weeks on orders from $50 to $999.99
- 2 interest-free payments on orders from $35 to $50
- Monthly plans on orders from $150
- Check out with Shop Pay, then choose an installment plan
Payment options are offered by Affirm and are subject to an eligibility check and might not be available in all states. Monthly plans may include interest (0–36% APR). CA residents: Loans by Affirm Loan Services, LLC are made or arranged pursuant to a California Finance Lender license.
Learn more about Shop Pay InstallmentsPayPal Pay Later
- Pay in 4: 4 interest-free payments every 2 weeks on purchases from $30 to $1,500
- Pay Monthly: 3 to 24 monthly payments on purchases from $49 to $10,000
- Select PayPal in your cart or at checkout, then choose Pay Later
Pay in 4 is available to consumers upon approval and is not currently available to residents of MO. Pay Monthly is subject to consumer credit approval, with a fixed APR of 9.99–35.99%. The lender for Pay in 4 is PayPal, Inc. (NMLS #910457). The lender for Pay Monthly is WebBank.
Learn more about PayPal Pay Later
Klarna
- Pay in 4: 4 interest-free payments every 2 weeks on orders of $35 or more
- No interest or fees when you pay on time
- Choose Klarna as your payment method at checkout
Klarna Pay in 4 is subject to approval and isn't available in Hawaii, U.S. territories (excluding Puerto Rico), or for APO/FPO/DPO addresses. Late fees may apply.
Learn more about Klarna
Affirm
- Pay in 4: 4 interest-free payments every 2 weeks on eligible orders from $50
- Monthly plans with rates from 0–36% APR based on credit
- No late fees or hidden fees
- Choose Affirm as your payment method at checkout
Payment options through Affirm are provided by these lending partners: affirm.com/lenders. Your rate will be 0–36% APR based on credit and is subject to an eligibility check. Affirm Pay in 4 is 0% APR. Options depend on your purchase amount and may vary by merchant. A down payment may be required. CA residents: Loans by Affirm Loan Services, LLC are made or arranged pursuant to a California Financing Law license.
Learn more about AffirmUPC: 730773222032
Goes well with:
90 Day Returns
Reef Guard Covered
Ships Overnight
Orders Over $399*
Expert Support
We've got your back!
Prevent algae breakouts by removing the nitrates and phosphates in your reef tank. NO3:PO4-X Nitrate & Phosphate Reducer from Red Sea is a complex of carbons each with a different strain of microorganisms in a reef ready solution.
Three Sizes Available
- 500mL
- 1000mL
- 5000mL
Red Sea's NO3:PO4-x is a part of their Algae Management Program that combines highly effective, controlled biological reduction of nitrates and phosphates for all reef and marine aquariums. Between testing and dosing the proper additives, nutrients in the aquarium can be easily managed with no undesirable effects. NO3:PO4-x helps promote naturally occurring nutrient-reducing bacteria that already exist in your aquarium.
- Reduces and maintains NO3 and PO4
- Cost Effective
- 100% Reef Safe (do not overdose)
- Nitrate and Phosphate reduction in a controlled setting
Dosage Guide:
We highly recommend starting with half the recommended dose for your aquarium type and using high-quality Nitrate and Phosphate test kits during implementation. Keeping a steady dosing regime is key, and daily dosing is highly encouraged. We prefer to use a dosing pump system for daily dosing, which keeps the doses very precise and reliable.
| Aquarium Type |
Recommended NO3 Level |
Recommended PO4 Level |
Average Daily Dose of NO3-PO4-X |
| Mixed Reef | 1-2ppm | 0.08 - 0.12ppm | 2mL per 25 gallons |
| SPS Frags | 1-2ppm | 0.08 - 0.12ppm | 2mL per 25 gallons |
| SPS Dominant | 0.25 - 0.5ppm | 0.01 - 0.02ppm | 1-2mL per 25 gallons |
| Ultra Low Nutrient SPS | 0ppm | 0ppm | 1-2mL per 25 gallons |
| Marine Fish | <10ppm | <1ppm | 3mL per 25 gallons |