Everything I’ve looked at and read about this points to calcined clay. Sadly they keep the ingredients “top secret”, even the MSDS lists the ingredients as “proprietary”… Probably to keep the aquarium hobbyist from going out and buying a bag of safe t dry. It’s the particle size that looks tempting, I will swing by petsmart tomorrow and see what it’s all about because I just finished sifting a bag of safe t dry and only got a gallon and a half if 1/8+ out of the whole bag.Disappointed no one had anything on this.
I can see this working out well, but haven't ever tried. It obviously can handle being soaked for long periods, but freeze/thaw cycles, actual water retention in a pot, etc., are all still unknown.
Next time I have some money (probably in another 20 years or so) I'll see about picking up a bag of this or something similar, and let folks know.
I’m going to do some experimenting this weekend. If I can find itYeah, that's why even when I have money I haven't gone the kitty litter or floor absorbent route. All I hear is the amount of waste product, and if I have to work for it anyway, I'll just go in the hills and dig and sift my own for free.
This stuff looks to be specifically made for plants, though, so possibly pre-sifted.
I just wonder what sort of water retention you might get out of something designed to be submerged.