Is my clean up crew sufficient?

[dmh41532]

The tank is 65 gallons with 29 gallon sump. I have between 10-13 Nerite snails at last count, two or three Cerith snails and five blue legged hermits. I was told that I need a lot more but a fish store.

 

[twilliard]

Trocious snails! I love those guys

 

[dmh41532]

So do I, but the stores in my area don't ever seem to have them.