my tub was winterized but the top blew open during the night in the rain, now I have some water sitting in the bottom of the spa, can I just suck it out with a vacuum and do I add more antigel?

my tub was winterized but the top blew open during the night in the rain, now I have some water sitting in the bottom of the spa, can I just suck it out with a vacuum and do I add more antigel?