I'm sorry I don't recall what the bag said on it. I can call them Monday and ask.
I did the DE test today adding 3 cups directly to the skimmer (without the sock) and no mixing with water. Honestly I was afraid to add 4
since 1/2 cup was too much earlier (meaning it would clog by filter and I have well water and it's hard to keep the water level up at times).
No white water came out the return at all. Three days ago I added an athletic sock to the skimmer instead of a nylon one so I could see if
it would get stained. That sock is now a dark brown (was white). We got in the pool yesterday and stirred it up really well and I didn't
see, what I thought was sand earlier in the week, in the sock this morning. In the sock are just normal bugs and dirt and like I said before very stained.
It MIGHT be a bit bit clearer each day now, but nothing to brag about for sure. Thank you for continuing to read. I really do appreciate it!
to be getting any clearer at this point.

Another observance, since adding the three cups of DE this morning, well over two hours ago, the pressure hasn't dropped any and the return is still strong flowing. The other day when testing and mixing the DE with water using only about half cup it clogged the filter and I had to back wash.