So like the majority of my supplements I use Brightwell Aquatics Magnesion-P for my magnesium dosing. I elected to purchase this along with the other powder products offered because I only have to add RO/DI water so I get the most bang for my buck. However, I noticed after mixing the color of the water appear to be grey. Also with all the powder products I notice that I have to shake the bottles up from day to day because I see solution that was once dissolved just become still at the bottom of the holding containers. Is this normal regarding the color and the other thing?