That's a nice tank you have! However, most cory species are not appropriate for a 10 gallon (some would go to say that no cory species are appropriate for a 10) and need shoals of 6+!
You may want to re-home the corys in place for a different bottom dweller.
EDIT: sorry, I may have come off as blunt. Welcome! (I do very much like your tank especially the root ornament in the center! It looks like a twisted tree from a forest)
I do have an empty 29 gallon and planning to move them over. Of course I'll add more cories just doing it with baby steps. Last thing I want to do is overcrowd. As far as the cories in the 10 gallon...they do well.
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