"123456" and "password" as crack standards
Using several different encryption algorithms, and not disclosing which is used in each particular case would require password verification to try all possible algorithms. Feasible only when using just a few algorithms. 
Truecrypt does this, for example.

This could strengthen security, when implemented properly - but it is much more difficult to implement.

Proper solution - salt.


Do not use MadeUpHashingTechnology without salt.
Do not use  MadeUpHashingTechnology ever, use public, verified crypto.