Not bashing or trying to start anything just asking advice and if this is normal. I was going to mix a new batch of salt and noticed that my brute had a good amount of residue floating on the water, on the sides, and on the bottom. I checked my fresh water brute and it was clean, both brutes have lids that are always on so isn’t an outside source. This is my third bucket of German pro reef and I don’t recall seeing residue like this in the past but it could just be an accumulation that I am now seeing. I know residue is fairly common with different salts I just hadn’t noticed it with this particular brand. Im wondering if I am safe to mix a batch in this RO water or if I should dump it, clean barrel and then refill and mix. I have heard some people saying they were having issues even with the German but I have not had any negative effects on my tank using it.