Ratio for cleanup crew to gallons?

[awestruck]

Hi all--is there a "standard" ratio for a cleanup crew. For example, I have a 58g. tank with astreas, nassarius, and ceriths. Currently there are probably only 15 total nass. and ceriths and I don't think this is enough to keep the sand clean (oh, and I have one 2" black cuke that does a good job). So, any advice on how many more snails I should add? TIA

 

[Snowsrfr]

I've always been told a 1:1 ratio.

 

[dc_909]

I say just slowly add them until you reach the point in which your tanks remains clean.

I have 10 hermits and 5 snails in my 80.

 

[jeffbrig]

Totally depends on the tank. In my 250g, I have only astreas, probably ballpark of 60-70, and that's all the tank needs to stay clean.

 

[awestruck]

Thanx everyone!