The short answer is yes, you can float if you are menstruating. However, you would need to take the same precautions as if you were swimming in a pool. If your flow is so heavy that you feel there is a risk of leakage or bleeding during your float time, we ask that you please reschedule your float for a better time of the month. Our tanks use pharmaceutical grade epson salt & are very costly to sanitize if contamination should occur. The cost of the cleaning would be at the floater’s expense.