[reefgeezer]

Welcome Mitch. Generally, small quantities of vinegar dosed in a reef tank doesn't directly kill macro algae. It is just too dilute. Over time, the resulting low nutrient levels can slow or stop the macro algaes' growth, and even cause die off. You don't have that issue though since you report 10 ppm of nitrate & .25 ppm of phosphate. Inadequate light or flow, or lack of another nutrient like iron might be causing your problem.

If you haven't been dosing vinegar for long, stopping it would be ok. If you have been doing it for a while, you might slowly wean the tank off of it. Care should be taken when changing things in you reef tank though. Remember, nothing good happens fast in a reef tank.