We finished boiling the end of march and got everything cleaned up. I always rinse and wash my RO at the end of each day and flush with distilled water. Was going to wait to add the preservative in it because I was waiting on a new pressure switch and wanted to get everything cleaned. Well life happened and dad and I went to the barn this morning and there the RO sits. No preservative in it and its august. Have I ruined my membrane? What should I do? Add it now and hope it's ok? Thanks for the ideas.