The NYOS Reef Cement is a rapid-curing, reef-safe adhesive designed for securely bonding live rock, coral frags, and aquascaping structures. Its unique formulation hardens within minutes underwater or dry, allowing reef keepers to create stable, natural-looking aquascapes without impacting water chemistry.
Fast setting: Hardens in just a few minutes, even underwater
Strong and durable: Forms a solid, reef-safe bond for live rock and coral structures
Versatile use: Ideal for aquascaping, frag mounting, and rock stacking
Reef-safe composition: Free from harmful impurities or phosphates
No impact on parameters: Does not affect alkalinity, calcium, or pH levels
Easy to use: Mixes quickly with minimal dust or residue
Volume: 500 mL (powder mix)
Form: Hydraulic cement
Mix Ratio: 3 parts cement to 1 part water (by volume)
Cure Time: 2–5 minutes underwater (depending on temperature and flow)
Color: Natural reef gray
Aquarium Type: Marine/Reef
Manufacturer Part # (MPN): NYO-REEFCEMENT-500
Building and securing aquascapes and rock structures
Mounting coral frags or large colonies
Creating stable, custom reef formations safely inside or outside the aquarium