I understand why they're making this product, and it's smart to target those markets, but I don't have any interest in this tank.
Also, it seems to me that a child lock on something like a tank is just not necessary, from a realistic, (as opposed to a heavy-handed gubmint regulator's), point of view. Any kid who's old enough to twist the top off a tank is old enough to defeat the "child lock". "Safety features" have never and will never take the place of good parenting and common sense. Just mho.