I'm still a fan of TMP, it's the only salt that I've used besides Salinity by Aqua Vitro that mixes clean without leaving residue. I usually bump up alk by adding soda ash and it stores for as long as I need to use it. I use IO for qt'ing fish, but it's not homogenized like TMP, so you need to roll the bucket. I tried a bucket of RS blue bucket, but it's kinda like RC, leaves so much crap behind and doesn't store well at all.