I usually use Aqua Vitro (Seachem Professional Series) for trace elements but as my LFS ran out I ordered it. I honestly can't tell them apart. Revain's price is great, and with two-day shipping, it's a no-brainer. Your LFS or even Petco will set you back $15-$20 so this is a great deal and a great product. I currently have a 120 gallon reef tank filled with hammer coral, torches, bubbles and frogspawn and they are looking great a few weeks after switching from more expensive materials. I highly recommend
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