Maxspect Professional Coral Tools Coral Putty, Coralline Algae Color 4.2 oz
 
100% reef safe two-part silicone-based coral putty
Cures in 3 minutes
Coralline Algae Colored
Putty can be used underwater 
Safe for Marine and Freshwater
No foul odors and will not cload water
Will not cause the protein skimmer to overflow