How many cleaner crew members is too many?

[ocellaris_keeper]

I have a 55 gal FOWLR/LS tank and have the following:
20 plus astrea snails (they have been the best for me and I am not sure the exact number)
15 Blue leg hermit crabs and two scarlet hermits
2 Pin Cushin Urchins (they both act differently)
2 Horse Shoe crabs
One Flame Angel and one Sailfin Tang.
I have no algae problem to speak of - is my tank generating enough food for these animals or do I need to allow for some algae growth (phosphate rich water for algae bloom?)

 

[tyrfing]

Don't worry if you're overpopulated with a clean up crew, if there's not enough food, there will be some die off. I know that sounds harsh, but that's what happens in the wild also.
Watch your horseshoes, they get big fast, sometimes up to 12 inches across, so be prepared to move them to a larger tank or lose them.

 

[ocellaris_keeper]

I was just hoping that my crew wouldn't effect my alage eating fish. The horse shoe boys are about 2 bucks apiece and I will remove them if they get too big and take them back to the LPS for some new little ones. Thanks