So sorry for your loss. Whenever I put my hands in the tank they associate it with feeding time and would swarm, it got to be a problem trying to glue and shoo them away, especially the Cleaner Shrimp he was relentless. Now I do it the way I mentioned above outside the tank in a container and then press the frag in the spot I want in the tank. No more fiddling with the glue in the tank.