Added TSS to my tank, and then 6 glofish, 4 days ago. Noticed today my big yellow glofish (during the 2 seconds he is still) has slightly pinkish gills. I don't remember if he came home that way, or not... He appears 100% FINE otherwise. He's taken over as *chief chaser* and oversees the middle of the tank, making sure none of the other glofish enter his little territory. Very hungry all the time, so fast I can't keep up with him. All other fish act the same, but with different coloration, I can't determine their gill color. Although you're not supposed to test the first 7 days with TSS, I did, and my readings were .25 (barely), 0, 5. While I'd like the NH3 to be 0, obviously, I am not alarmed enough at the .25 to take any corrective action until I've given TSS a chance to do its stuff. Should I be worried today? I'm thinking no, just watch closely, but would like a second opinion.