I got a bad batch of glue apparently. I use Insta-cure, it's an exothermic fast-set glue that you spray an accelerant fluid on to make it harden in seconds. It's fantastically watertight, sturdy, and makes rapid construction and prototyping possible.
However the bottle I just recently bought must contain a faulty batch. It no longer cures when you spray the accelerant on it, it turns into a goopy greyish mess. Somehow the wrong chemical was labeled as accelerant. Or the glue is to blame? Either way if I can't clean it out of the bottom of the habitat I may have to scrap it and start over. A very expensive mistake.
I'll be returning this bottle and the bottle of accelerant to the store soon and having it replaced. Hopefully the grey crap can be washed out and I can salvage hamstation. If not I may need help buying new components for a replacement habitat.
P.S. this is their second week underwater in Hambase Alpha. Well, first was a 7 day mission, then a day of rest on land, and since then they have been underwater an additional 8 days. Food and water supplies are still abundant, so I'm gonna try for a month.