Hi everyone. I just joined this thread to get help with my goldfish. I have 2 Ryukins and one is not doing well. His fins are clamped down.. the past couple of days he’s been hanging out at the top and today he’s down towards the bottom. Here’s my tank set up: 26 gallons Sand substrate 40 gallon capacity filter Artificial plants One piece of driftwood. Temperature kept at 70 degrees. I have well water so the PH is high... I’ve been working for weeks to get it down (hence the driftwood). Yesterday’s water test results: High range PH = 8.2 Ammonia = 0 Nitrite = 0 Nitrate = between 10-20 ppm I noticed my healthy fish is picking on the sick one so I just set up a “hospital” tank... problem is that it’s only 5.5 gallons. I know this is WAY too small for a goldfish but I feel like getting him away from the other fish and into lower PH is his best chance for right now... am I right about that? Or will putting him into a smaller tank for now make him worse? Also, I bought bottled drinking water to fill the hospital tank so that it has a lower PH but it’s a lot lower (6.8) compared to the 8.2 he’s in now. I think I’ve read goldfish need around 7.4. Sorry for the long post but wanted some advice on what you’d recommend. I’m worried I’m too late.