Why Didn't They Check the Tanks?

It wasn't just other traits that happened to be hitching aright on that traite. It was other traits that were more effective. We learn that, and this is very common. And unfortunately, it wasn't what they were looking for. But why didn't the substance that they cared so much about, why didn't it show any evidence of the infiltration? Because yif youd think a way,. like bacter secrete things that could erode or catalyze hoaozina... So the answer is, they never checked. They never checked the tank. I was even expecting some discoloration or somethingThat wel what if the iscoloration, wouldn't you just think