Marine Depot now offers FREE economy shipping with no minimum purchase for 99% of the products we carry! Orders under $299 are shipped FREE using a mix of economy shipping methods including USPS First Class Mail, SurePost and UPS Ground. These shipments are typically delivered in 5-7 business days. Orders placed Monday-Friday before 10:30 am PST are shipped the same day. This offer is valid for orders shipped within the contiguous U.S. only. Frozen foods, live foods, and items shipped directly from the manufacturer do not qualify for this special offer.
$4.99 Upgraded 1-5 Day Shipping (FREE for orders $299+)
This is the shipping method most Marine Depot customers are accustomed to and is really the sweet spot for service and value. Thanks to our two strategically placed warehouse locations, over 90% of Marine Depot shoppers receive their orders within 2 business using this level of service (UPS Ground).
UPS Ground shipping is available for only $4.99 but is FREE with orders over $299. This shipping upgrade speeds delivery time to 1-5 business days. This offer is valid for orders shipped within the contiguous U.S. only. Frozen foods, live foods, and items shipped directly from the manufacturer do not qualify for this special offer.
Frozen foods are delivered 1-3 business days from the day your order ships. Frozen foods are shipped every Monday and Tuesday. Shipping cut-off is Tuesday at 10 am PST (1 pm EST). Orders received after 10 am PST on Tuesday will be shipped the following week. Shipping and handling is a $19.99 flat-rate charge so you can order as much or as little as you like.
Orders not shipped within the contiguous United States—the 48 U.S. states on the North American continent south of Canada plus the District of Columbia—are considered international orders. International orders are not eligible for Marine Depot’s free shipping promotions and additional surcharges may apply. It is important to note that not all products we carry can be shipped internationally. Any brokerage fees, tariffs and/or taxes will be billed to you directly by the shipping courier. International customers must use the same billing and shipping address.
NO3:PO4-X Contains a unique complex of carbons that are used by nutrient-reducing bacteria. Each carbon is utilized by different strains of microorganisms while maintaining the specific Carbon: Nitrogen: Phosphorus ratio required for each stage. The complex includes other organic bonded elements that are important stimulators in each stage of the reduction process. These metal and non-metals elements ensure steady bacterial propagation and complete nitrate reduction to nitrogen gas and the absorption and utilization of phosphate by the bacteria.
The fine control of the nitrate and phosphate levels provided by monitored dosing of NO3:PO4-X guarantees the gradual changes and accurate maintenance of the nutrient levels, preventing destruction of the zooxanthellae population that can cause UV shock and starvation of the corals.
Unlike some other low-nutrient regimes, correct use of NO3:PO4-X will maintain all of the beneficial micro fauna.
NO3:PO4-X is also recommended as a complete carbon source for use with carbon based de-nitrators.
NO3:PO4-X, available in 500ml and 1000ml bottles, also includes a measuring cup for easy dosing.
Notes for use:
Uncontrolled reduction of the algae nutrients can destroy the symbiotic Zooxanthellae causing UV shock and starvation of the corals. For best results always use an accurate test kit such as Red Sea’s Nitrate Pro test which has an accuracy of 0.125ppm.
Once lower levels of nutrients are achieved, as seen by corals displaying their natural colors instead of “Zooxanthellae” brown, it is important to start feeding with easily digestible foods such as Red Sea’s Reef Energy 2-part formula that contains all of the necessary carbohydrates, amino acids and vitamins.
Efficient protein skimming is essential to provide the necessary oxygenation of the water and to remove bacterial flocks from the aquarium.
Red Sea Reef Care Recipes offer easy-to-understand and simple-to-implement instructions for reef maintenance, tailored to each type of aquarium. 3 easy steps for maintaining your reef aquarium. Water changes | Supplementing | Testing.
Select the system type that best describes your reef. The Reef Care Recipe will outline the ideal water parameters for your system, how to maintain them and what products to use.
With a dedicated team of scientists and other professionals, Red Sea is widely recognized as a leading innovator and manufacturer of quality products for aquarium hobbyists. Red Sea constantly strives to provide hobbyists of all levels with highly effective solution-driven products designed to make your fish-keeping experience as enjoyable and successful as possible.
The embodiment of Red Sea’s dedication to providing solutions for today’s reef-keepers is its range of MAX-NANO, MAX-E & MAX-S aquariums- The only choice for true Plug & Play™ coral reef aquariums, now featuring the very latest in LED lighting technology.
For advanced reef-keepers the Red Sea REEFER provides a great platform into which you can add your own selection of hardware. With its ultra-clear glass, ATO built-in, silent flow valve and superb quality of finish the REEFER sets the standard for those wishing to customize. REEFER is also available as a Deluxe version with LED lighting included.
Red Sea’s unique Reef Care Program (RCP) provides a comprehensive, safe and easy to use program for testing and supplementing within reef aquaria, and is perfectly complemented by Red Sea’s Coral Pro & Red Sea Salt’s, which has become the salt of choice for those seeking the very highest quality water quality for their coral reef aquariums. Both salts are made using a unique natural process which delivers unrivalled homogeneity and is perfect for delicate corals. Check your individual bucket of salt’s composition using Red Sea’s innovative new “MyBatch” software.
Whatever your aquatic needs, Red Sea delivers high quality innovative, solution based products.
Ask a Question Earn 15 Points when you answer a question
Sort By :
9 Questions
Displaying questions 1-9
Q
Will this help reduce nitrate?
My nitrates are >25ppm. Will this help reduce them? If so how quickly can I expect a response?
Thank you for submitting your question. The Red Sea NO3:PO4-X Algae Management Supplement is a great product for reducing Nitrates and Phosphates in Salt Water and Reef Aquariums. How fast can this product reduce the Nitrate will vary from tank to tank, the best advise that we can give is to test your water parameters weekly or bi-weekly and follow the instructions by Red Sea to ensure that you reach the desire parameters.
Answered : Aug 02, 2017
By : MD Tech
Q
Should this product be used on a daily basis until I get the Phosphates under control?
I bought the NO3:PO4-X but it does not say if I should be using this product daily. Can you help? Please advise if this is a daily regiment?
Red Sea NO3:PO4 is used daily, please reference the dosage amount as you would not want to overdose. As your Nitrate/Phosphates lower you would decrease the dosage.
PROS
Keeps nitrate’s & phosphate at desirable levels, easy to use
CONS
None
REVIEW
Great solution for ongoing maintenance to keep system stable. Recommend using Red Sea A & B in addition when using this for corals required nutrients, increase’s color and growth.
This product is very effective, I have had the best luck of keeping Nitrates stable at or around zero by using a dosing pump. I have a 200 gal reef with a heavy fish load. Dosing pump makes it simple and all you have to do is remember to keep the bottle you pump is drawing from full, so I pout th...Read More
This product is very effective, I have had the best luck of keeping Nitrates stable at or around zero by using a dosing pump. I have a 200 gal reef with a heavy fish load. Dosing pump makes it simple and all you have to do is remember to keep the bottle you pump is drawing from full, so I pout the product into a clear plastic bottle so I can easily see the level. Be patient...if you dose too heavy too fast you get a cloudy, slimy haze that builds up on your glass daily and will clog your filter sock quickly...again, be patient while adjusting the dose...start at half the recommended dose then build your way up from there!! Trust me on this tip!!!Hide
Nitrates were at 25ppm in my 90 gallon mixed reef, little higher then i liked. I tried everything to get them down. This brought Nitrate down in a week to a more comfortable 5ppm and I am now fine tuning the dose to keep it around 1-2ppm.
Have been using this product for several months. It has worked as planned but did take a little tweaking on my end to get it where I wanted it. Great product and would recommend!
It's a excellent product my nitrates were 50 ppm
After about 10 days my nitrates are now 10 ppm
I highly recommend this product very easy to use your protein skimmer works overtime.
This does work, however, you have to be patient. Takes about two weeks to fully reduce nitrate levels to near 0. Daily dose is required. After that, I use a half dose few times a week. Seems to be working well.
Most products ship free—no minimum purchase required
We ship 99% of the products we carry for free within the contiguous United States using a mix of economy methods including USPS First Class Mail, SurePost and UPS Ground. Your order will arrive in 5-7 business days.
upgrade your shipping for only $4.99—free upgrade for orders $299+
Over 90% of our members receive their orders within 2 business using UPS Ground. Upgrade from free economy shipping to UPS Ground for only $4.99—or spend $299 and we’ll upgrade you automatically!
need your order even faster? no problem!
Expediated shipping services are available for most products if you are in a hurry. Get guaranteed delivery in 2 business days, 1 business day, or next day by 10:30 am. Costs vary by location.
buy it today and we'll ship it today
Same-day shipping is available Monday-Friday for most products—place your order by 10 am PST. Pre-ordered and back-ordered items do not qualify, nor do drop-shipped, live, or frozen shipments.
live plants, live foods, and frozen foods delivered to your door
We ship live plants, live foods, and frozen foods within the contiguous United States. Each of these categories is subject to its own $19.99 flat-rate shipping fee to cover the special packaging and/or expedited shipping costs required to ensure safe delivery. Orders with 12+ live plants ship free!
Return any new and unused item within 60 days for a full refund. Having difficulty with a product? Contact us to speak with an aquarium expert. If you need a replacement, fill out this form.
A small segment of the 180+ brands we carry require that customers contact them directly if/when problems arise. You can view the full list of those brands and get their contact info here.
Marine Depot is an authorized reseller for every product we carry. That means when you buy aquarium supplies from us, your products are not only backed by our own 60-day return policy, they also carry full factory warranties, where applicable. Some items have a 1-year warranty, others have limited lifetime warranties. Warranty coverage varies from manufacturer to manufacturer, so please read the product description of the item(s) you are considering thoroughly for details or contact us if you have warranty questions.
Rack up reward points to earn discounts on future purchases! You can earn reward points by creating an account, writing reviews, referring friends, subscribing to our newsletter, buying products, and more!
Earn 5 reward points for every $1 you spend to get 5% cash back Most Products
Earn 1 reward point for every $1 you spend to get 1% cash back AquaIllumination, CoralVue, Digital Aquatics, EcoTech Marine, IceCap, Innovative Marine, Kessil, Korallen-Zucht, Maxspect, Nano Box, Neptune Systems, NYOS, Oceanbox Designs, Pax Bellum, Red Sea, Reef Glass, Reef Octopus, Somatic, and Vertex Aquaristik
You can also get bonus reward points by purchasing select items during special sales and promotions.
If you find a product we sell for a lower price at another online store, we will match their price to ensure you always pay the lowest amount when you shop with us.
Enter the price, shipping cost and website address where you found the lower price. Then click the "Add to Cart" button. We will review the lower price while processing your order and make any necessary reductions before your order ships. Some restrictions apply. See Terms & Conditions