I use IO and never had any issues i found out about a year ago that after I buy it I roll the bucket all around on its side for like 10 minutes mixing it around in the bucket and before each use i do this. It might just be me but it does mix/dissolve better and the Alk did measure slightly higher if i remember right. Had 1 guy at petco that was good and he told me this, since who knows how long it has been sitting. Wish he still worked there tanks there looked great now not so good lol. Really matters who you hire !
Plus price and availability i can get it for 60.00 or less this time of year with my membership
Plus price and availability i can get it for 60.00 or less this time of year with my membership

