Quote Originally Posted by waterbear View Post
Dry acid should always be predissolved in a bucket of water (where it forms sulfuric acid, btw).

Also, with a SWCG it is better to use muriatic acid instead of dry acid. Dry acid will add sulphates to your water and these can be damamaging to some salt water cells. Muriatic acid is also less expensive and more effective (less is needed for the same pH drop.)
I do pre-dissolve the dry acid in water.

I got kind of scared away from muriatic acid after hearing about all the safety precautions in handling and storing it -- not keeping it indoors, even in a shed; keeping the container wrapped in plastic and then also stored in a covered garbage can; the fact that the pool store itself says they don't sell it as indicated by law; wearing a mask when handling. Are my fears founded?