You're welcome! But I don't see the fascination of looking inside a holding tank. I have a 2014 boat, and I've never had the access hatch off the holding tank; as far as I'm concerned, the tank just works, so why bother looking inside it? My previous boat, a Hallberg-Rassy, had a stainless holding tank with no access hatch, that wasn't a problem in 20+ years.