Quickly collect the fish, as they float to the top, with a spear or net. I don't believe it is advisable to use these lime bombs in less than five feet of water. There is a bit more - mostly that the lime bombs will work at great depths where dynamite won't. Quick lime is hard to find but not impossible, it is used in some capacity to clean outdoor toilets. I understand that it has been used by criminals to dispose of bodies.
Biological poisons are the primitive man's form of explosive.
A fish trap or tidal pool with small amount of effective toxin that stuns the fish makes sense for a community or even a single person that will dry and smoke the surplus. It's a paperback approx. If you want to post the excerpt from Ragnar Benson's book along with this post to the group be my guest. I just wasn't sure it was appropriate.