But the salt water recipe had gone through several iterations before we got to the one when I started the life support equipment was real basic and didn’t have anything more than what we call mixed media filters, which is six. You start out with gravel and you work up to finer and finer material to get a stack that has sand at the top. So as I said, we, you pump the water in the top of the filter and as the water flowed down by gravity and out the bottom, it’s taken out the chunks, if you will, on eating food or whatnot. But it didn’t filter out, you know, parasites or anything. We had no ultraviolet light, nothing that would kill parasites. And it was very, very basic. It was, I’m, I’m sure a bit more advanced than when the, a corn first opened in 1930, but probably not much above that. So.
