Cleanup Crew Misnomer ??

[mark]

Originally Posted by fragNplug

I have had a number of reef tanks for a very long and have always been setback at the so called experts and their recommendation of 1snail and 1crab per gallon of water.

Your ideas?

that expert wouldn't happen to be a LFS sales person

[fragNplug]

Chances are it could be but almost every place on the internet that sells crabs recommends it, so im wondering how they got to decide what is the recommended amount and become the norm.
This site that is more informations say on averge 1 per 2 to 5 gallons
http://www.reefland.com/rho/0305/medprod3.php