Sure! It's also OK to swim that EVENING.

Using cal hypo? High calcium and SWCGs don't play well together.
Do you have a K-2006?
Do you know how to MANUALLY clean your DE filter?
Is your SWCG DOWNSTREAM of your filter?
If the answer to all those questions is yes, you might want to use an alternative method of dosing with cal hypo that will limit the calcium build-up in the pool. Meanwhile, you need to know where your calcium levels are at present.