hey, i've always used the regular bacterioststic water for mixing my GH, but the last time i went to the pharmacy to grab a bottle they were out of the plain water so the pharmasist gave me bacterio sodium chloride, 0.9%. its the same deal but with a little bit of salt for sterization (0.9%). but i noticed when the water hit the powder it desolved quicker. i know GH is very sensitive. do you think the salt in the water is wekening the GH?? thanks. peace