Randy,
Knowing Pumice is aluminum silicate yet marketed as being inert than is there documented proof of it leeching aluminum or other elements? I've attached a screen shot I found on it's properties where it is listed as inert except with Calcium Hydroxide yet can't find how exactly does Calcium Hydroxide affects Pumice. Been running it in my test tank since September 2021 and will be sending out an ICP in a couple of weeks and have used Kalk briefly (few days) but even if the results come back lacking excess aluminum there's now a concern I perhaps should stop using it. Have other options but do appreciate that it's the lightest of the options and available at low cost and various sizes.
The item I've been using is sold for orchids. Assumed it would be of a cleaner quality as far as perhaps not having other impurities yet wasn't concerned with the actual material itself since it is marketed as being inert.
Knowing Pumice is aluminum silicate yet marketed as being inert than is there documented proof of it leeching aluminum or other elements? I've attached a screen shot I found on it's properties where it is listed as inert except with Calcium Hydroxide yet can't find how exactly does Calcium Hydroxide affects Pumice. Been running it in my test tank since September 2021 and will be sending out an ICP in a couple of weeks and have used Kalk briefly (few days) but even if the results come back lacking excess aluminum there's now a concern I perhaps should stop using it. Have other options but do appreciate that it's the lightest of the options and available at low cost and various sizes.
The item I've been using is sold for orchids. Assumed it would be of a cleaner quality as far as perhaps not having other impurities yet wasn't concerned with the actual material itself since it is marketed as being inert.