Pros: claimed to make your food into super foods.
Cons: Will raise your nitrate levels and cloud your water
-I have used this product on and off again. Did not really see a big difference. Bottles of Selcon shipped to me will cost me around $30. Depending if i buy in bulk. Personally, my fish are happy and healthy without it. Whenever i used it, it caused my water quality to drop and increased my nitrate output.
Decent product if you don't feed any other food except flakes, or nori. But if you supplement other foods really not worth the hassle and $$$. thats my opinion.