Salts h20 vs reef crystal

[Cal_stir]

i was using reg IO then switched to H2Ocean for @ 8 months, H2Ocean was inconsistant mixing, even with mixing the pail first, left alot of reddish brown residue in my container and on my sand bed, i just switched to IO reef crystals, it always mixes clear and with little residue, bought 10 200gal boxes for 450 bucks.