(These were designed to be low-maintenance and to self-stabilize due to heat expansion of the core. They were certified as being safe enough that you didn’t need a nuclear tech on-site 24/7, unlike most reactor designs.)

I thought the Kube X15 sounds like a wonderful product, but they didn’t list the price on the page. If I have to take a second mortgage out to get one, then it may not be that great a deal.

The capsule sounds like it’s intended to draw chemically-active heavy metals out of solution. That’s fine, but it doesn’t sound like it’ll do much for the main contaminants of concern (iodine-131 being a good example: highly soluble in water, long enough half life to spread, short enough half life to kill you).

If it did work, you’d also end up with a capsule that contains concentrated radioactive waste. That will be a disposal nightmare paperwork-wise.

Long story short, it doesn’t sound like an april fools article, but it doesn’t sound terribly useful either. As a chelating agent for picking up heavy metal waste cleaning industrial sites, on the other hand, it sounds lovely.