NO3:PO4-X is the original, safest, most popular, and best solution that provides a full, reef-safe, controllable method for nitrate and phosphate reduction, thereby boosting coral growth and coloration in any reef or marine fish system.
Unlike other methods, the monitored dosing of NO3:PO4-X biologically reduces both nitrate and phosphate, while enabling the fine control of their levels. This fine control allows gradual changes and guarantees accurate maintenance of algae nutrient levels required to safely reduce nuisance algae and bring the symbiotic zooxanthellae algae to the optimal levels needed for boosting coral growth and coloration.NO3:PO4-X is a unique complex of carbon substances and other organically bound elements that enhances the activity of nutrient reducing bacteria, which naturally exist in all marine aquariums. Each carbon source in the complex is utilized by different strains of microorganisms and together with the balanced ratio of enzymatic co-factors guarantee a complete and safe denitrification process (nitrate reduction) and phosphate reduction in the aquarium.* Efficient protein skimming is critical to the safe use of NO3:PO4-X.Easy to useNO3:PO4-X is formulated for daily dosing and when combined with weekly measurements of Nitrate and Phosphate enables gradual changes and the fine control of algae nutrients that are so important for the long-term health of all corals.New tanks, untreated established tanks, and established tanks that have used alternative methods of nitrate and/or phosphate reduction will all react differently when starting to use NO3: PO4– X. However, over time, the nutrient levels will stabilize as desired, irrespective of where they started.With continued correct use, there are no undesirable side effects when using NO3: PO4-X. It is safe for all fish, corals, and microfauna. Even a large accidental overdose should not cause any irreversible damage as long as a suitably rated skimmer is installed on the system.Notes for useUncontrolled 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 are 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.Package size/volume500 ml (16.9 fl. Oz.)
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Next Day Shipping Upgrade - Cut off Midday (12 pm)
Please Note: We only deliver ponds and pond plants on our own delivery vehicles!
The blue highlighted area on the map below is where we deliver on our own vehicle! Unfortunately, if you are not in one of these postcode zones we are unable to deliver certain items such as plants, small glass items and selective other products.
We offer a few different delivery options depending on the size and value of your order.
Orders over £50 qualify for free mainland UK (excludes Northern Ireland) delivery which will arrive within 3-5 working days of the order being processed.
Residents of Northern Ireland, please provide your EORI or XI Number.
If you do not have one, please follow the information at https://www.gov.uk/eori
Orders Below £50 in Mainland UK will be charged a standard delivery fee of £5.99.
Additional Shipping Charges
For any orders that do not include Aquariums, the below is charged:
Next Working Day Parcel Delivery to Mainland UK - £7.99 OR £2.99 if the order is over £50
Standard Parcel Delivery to Northern Ireland £8.99
Standard Parcel Delivery to Scottish Highlands & Islands £9.99
Standard Parcel Delivery to Jersey & Guernsey £12.99
For all Aquarium deliveries (Excluding biOrbs & Smaller Aquariums), the below is charged:
Next Working Day Pallet Delivery - £20
2 Hour Booking Slot Pallet Delivery - £20
Pallet Delivery to Northern Ireland - £38
Pallet Delivery to Isle of Wight (PO36 and Above) and Scottish Highlands (AB, PH, IV1-36, IV63, KW1-14, KY, PA21-41) - £38
Pallet Delivery to Southern Ireland - £48
Pallet Delivery to Offshore postcodes (KA27-28, PA20, PA42-49, PA60-90, ZE, JE, GY. IM) - £70
Pallet Delivery to the Scottish Isles (IV40-56, KW15-17) - £90
Pallet Delivery to Outer Hebrides (HS) - £120