NO3:PO4-X will prevent the growth of nuisance algae and promote coral coloration. N:P-X is a fully researched and tested biochemical product containing a mineral complex and special blend of carbon sources to ensure the long term stability of the treatment as well as inhibiting sulphate reducing bacteria. Since the heterotrophic bacteria are totally dependant on the NO3:PO4-X the reduction process is totally controllable and safe. Unlike other methods of NO3 and PO4 reduction this system guarantees gradual changes in the algae nutrients allowing proper time for the corals and Zooxanthellae to adjust. Designed to work perfectly with Red Sea’s high-precision test kits, making them ideal for those with smaller aquariums. The new, smaller sizes feature the same full-strength solutions and comprehensive instructional guides as the existing, larger sizes.