I remember a discussion about this a couple years ago and the final decision by everyone was the calcium chloride in that form would probably be alright, but there is no way to know what other contaminates may be in the mix. Being driveway ice melt we believe there is not enough quality control to take a chance.
I actually did a lot of searching on this And making stores pull msds sheets This is a cheaper alternative but you have to understand the ratios and fluffer additives to buy it right Sent from my iPhone using Tapatalk
I did research and appartnely prestone's Driveway heat is pure enough for aquarium use. There are several forums threads on the internet talking about its use. I've also seen read people using Arm and Hammer for alkalinity.
