I started my macro tank in January and I've been using IO salt as I have dine in the past with my first tank almost a decade ago. However, the last two batches have produced brown residue and small white particulates that won't dissolve and I'm not too happy with it. I tried a couple different ways to mix the salt to see if maybe I was doing something wrong. Can IO salt produce nitrates? I've also had a bit of a microalgae bloom since the last water change that I can't figure out the cause of it. Nonetheless,I think it's time I move on to another brand. I've been thinking about Tropic Marin Pro as it seems highly recommended but it also seems very popular and hard to get. I've been looking at Brightwell's NeoMarine Salt and Red Sea's Salt (not the coral pro version, I'd like to keep my alkalinity around 8). So I was just wondering if anyone had any advise/suggestion on what salt I should switch to and if there was a certain procedure to follow when changing the salt. Thanks!