Ask like an adult, without confrontation. Don't show achievements, demonstrate value. Request that compensation be in line with your contributions. While you're at it, relate to the corporate goals and your potential impact in future opportunities at the company.

Know what double digit is. It costs a lot to run a 25 person operation, double digit can be 10% (barely close to inflation-bad) or 30%+(good). Understand that most successful businesses, unless they are planning for a large acquisition, increasing cash reserves in light of major market movement, or the like, will budget a reserve for cost-of-living increases to salary. This amount is almost always arbitrarily given to high achievers or out-of-line comp, with the rest thrown back into general fund for unplanned capex.

Understand that you have the option of bringing up that you have personal goals (housing, greater education, financial responsibilities, personal growth) outside of work that you can use the extra resources towards. This shows initiative to grow and not just a move to make a point (remember: confrontation is not always a good move).