Left tube's bladder was leaky this summer. I was able to take the cataraft out on several trips, and it held air. On hot days, stay tight. Overnight, and parked in garage, tube lost more air than what should normally be seen. I always clean out the raft, unzip it and clean bladder, remove dirt, dry it, etc. The bladder has small amounts of water mixed with sand. I can't find any leaks though. Is it possible to open the bladder to clean out the water and sand? I can't find any leaks, did the whole water and bubble thing. I want to get this fixed before rafting season. Any tips / hints?
Here's a poor cell phone picture, I get a better one later. It shows the most sandy / watery area.