I have always used the liquid befor but they had the powder at the LFS this time and the guy talked me into it. Told me to individualy mix it in a cup of water and add to my ATO a few mins apart like I was the liquid.. I did that and my ATO just kicked on and poof!! My tank is cloudy!!! My ATO is a cheep DIY kit that I have hooked to a maxijet 600. It usually fires about 2 cups of FW into the sump when it turns on. When I added part B I just bumped it in, gave it a quick stir and put the lid back on. Looking at it now it's very cloudy in the top off bucket! Is this a big problem?!? I'll dump this water and get clean RODI now but how do I avoid this in the future?