Fries are now 25 day old. I think I still have over 150 fries. I tried random sample count and it came to around 150. Some are very big and I think they are about the getting color. They seems to be healthy but with the white spots on them for 2 weeks now. I treat them with full dose of coppersafe and the water temperature is about 84F but the ick still there.
This weekend I will remove them to the new tank with aged water but without water condition. Then I will give them full dose of coppersafe. I wonder of the water conditioner neutralize copper from coppersafe.
I think the water conditioner does partially neutralize the copper. Water conditioners contain mostly sodium thiosulate some dissociated into water to give Na and SO4. Coppersafe contains mostly copper (Cu) and. Cu will react with SO4 to produce CuSO4.
Last night I used 1 gal of 3-day old tap water without using any conditioner and full dose of coppersafe. The fries seem ok with 3-day old water without water conditioner.
I hope I can save this spawns. I think it is hard to get ick off the fries. I hope that the tank is bad so remove fries to new tank may help with the treatment.