Dye may suppress the natural phytoplankton bloom, which of course is the foundation of the natural food chain in your BOW. I honestly never gave that aspect the attention I probably should have, since I feed pellets. In my case, I consider the tradeoff very worthwhile.
I like the way my water looks with the dye. it's also easier to see the fish coming to the surface at feeding time, as they contrast against the dye quite well....not nearly as camouflaged as they are in my un-dyed water.
I prefer Aquashade brand dye.
