30 gallon planted Espei rasboras Flame tetras Otos Furcata rainbowfish Amano shrimp Nerite snails My 30 gallon tank came down with Ich on 12/18 I started raising the temp on 12/19. On 12/26 I took forum advice and raised temp from 84-ish to 87/88 because Ich was still present. Unfortunately the tetras developed a secondary bacterial infection (whitish patches) by 12/30 and all the tetras immediately went into QT. At that time I only had Maracyn2 on hand, so I started with that in the QT. The following day I brought home Coppersafe and Maracyn1, but hesitated adding the Maracyn1 because I'd read so much about it being more likely to crash the cycle in the QT, and dealing with daily QT WCs and diseases in both tanks just seemed overwhelming to me. So I decided to just see how things went with the Maracyn2 and Coppersafe. The first 2 days I reduced the QT temp to 73/74, and I've slowly raised it to 77. So today I'm on Day 5 of Maracyn2 (just added 5th dose) and it's been 4 days since the addition of Coppersafe. I've done 2 small vacuums of bottom-dwelling detritus, removing no more than 30% of the water. I pulled over the light from the main tank this morning and observed the tetras in QT. At the beginning of this bacterial infection, there were at least 5 tetras with whitish patches, two seemed to be the worst affected, and one of those two had an additional bump on its side that was surrounded by the whitish stuff. Today, all but the worst two look good, and the worst two look significantly improved, with the whitish patches significantly diminished (but still present). The bump on the one is 1/3 of its original size (but still present). My questions are: 1. Because of the WCs, do I need to add any additional Coppersafe? 2. Should I be keeping the temp below 77? 3. Since I have seen improvement in the last 4 days, should I assume the Maracyn2 is working according to schedule and that Maracyn1 is not needed? 4. At what point should I consider re-dosing Maracyn2 if the patches don't disappear? (How long after first dose) 5. If I do need to re-dose, should I add in the Maracyn2?