regarding hair algae growing on liverock,
i dont think Nassarius Snails will help much..
but yes,
they are hardworking...
never fail to come out of the sand during feeding time..
The Nassarius Snail is an efficient scavenger and detritus eater.
You will be surprised at how quickly a small group of Nassarius Snails will clear detritus, uneaten food, decaying organics, and fish waste.
i think they (4 of them) took out my dead copperband in a few days that i cant even find its body..
The snail also helps to aerate the sand.
Need to have DSB cos they will be burried underneath most of the time unless its feeding time..