it looks like some kind of redwood, like a giant wine cask (remember lucy & ethel crushing the grapes on I LOVE LUCY?) it’s hand made possibly from a kit,I noticed a silicone"caulk" type thing between the planks,it’s been sitting for a few seasons gathering leaves and all kinds of bacteria& whatever else, that i need to clean up without affecting the wood. PLEASE HELP! I WANT TO USE MY HOT TUB!!!!
THANKS!!