Very bad recommendation. You added padding, but you're neither salting nor chaining. You are seriously undermining the encryption by using it directly instead of using Crypt::CBC.

By avoiding Crypt::CBC, you're actually making the code longer and much more complex, risking the addition of errors and making it harder to maintain.

It's not just speculative either. You added a bug. Any input matching /\x00\n?\z/ cannot be encoded.

Blowfish is a secure algorithm, but like all algorithms, they're only secure when used properly.