The Deltec NFP Nitrate Filters are a simple and efficient way of reducing the nitrate level in your aquarium. A membrane bag is filled with nitrate reducing carbon source 'nitrate fluid' and installed inside the reactor as a slow-release system. Information
David Saxby spent great amounts of time and effort working with Deltec in Germany to create a new range of nitrate filters which would overcome many of the problems that are commonly found with this kind of reactor.
The nitrates in his 3,700 gallon aquarium had crept up to the 50-60 ppm level due mostly to the 400+ fish that the tank houses and was having an affect on the bright colors of some of the corals. Working with the aim to make the new nitrate filter as simple and effective as possible it took about 10-12 weeks to bring the nitrate in his complete system to zero and involved many adaptations to the reactor.
The new units are alcohol fed which can be added by syringe, osmotic bag or by a peristaltic pump and are capable of being pressurized so that they can sit in a cabinet below the tank if you do not have a sump.
NFP Model Specifications NFP509
For aquariums up to 210 gallons, Dimensions (LXBXH) 225 x 170 x 560 mm, Includes 1 Membrane Bag, Daily Food 8ml NFP512
For aquariums up to 423 gallons, Dimensions (LXBXH) 300 x 220 x 580mm, Includes 2 Membrane Bag, Daily Food 16ml NFP616
For aquariums up to 1057 gallons, Dimensions (LXBXH) 340 x 265 x 580 mm, Includes 3 Membrane Bag, Daily Food 40ml NFP1020
For aquariums up to 2641 gallons, Dimensions (LXBXH) 390 x 310 x 1010 mm, Includes 9 Membrane Bag, Daily Food 100ml
Be aware however that these filters work on natural biological processes which involve the growth of a stable colony of denitrifying bacteria and therefore a certain amount of patience and understanding is required. White nitrate reducing bacterial build up inside the reactor once it’s been commissioned correctly.
Choose a reactor size that will turn your tank over once every 14-28 days when running at full capacity. If too large a unit is used, it will become harder to step it down once the nitrate is under control.
--- NFP SERIES INSTRUCTION MANUAL