Am I in trouble?

[Andyroo]

They're notoriously bad-tembered. Might not mix well with cory/khuli combo.
If algae is your only issue bag 'em up, take 'em back to the shop and trade 'em for a (couple of) mystery or nerite snails.
A

 

[Spencerfish98]

They have been fine so far with my other fish. I dont want snails i dont like the way they look. I really didnt have a big algae problem i sorta just wanted some cool fish that would contribute to my tank. I will put them in my friends 200 gallon pond when they are approx 5-6 inches. He will pay me for them and i will buy some new fish with that money if i can. How slow do they grow?