Hello, everyone. I have a black moor goldfish who shows all the signs of low oxygen levels, and I can't seem to figure out how to raise the O2
Answers to the standard questions:
1. Black moor goldfish. Swollen eye with a little blood inside. (Seems to get a little better with each H2O change, then starts getting red again.) Constant gulping at the top of the tank, and very lethargic--sitting for long periods at the bottom of the tank. Buddha has had these symptoms for several months now, and I am at my wit's end.
2. According to my API Freshwater Test Kit, everything is perfect--pH 7.6+, Ammonia 0, Nitrite 0, Nitrate <40. (These were taken BEFORE my Sunday 20% water change, and besides the Nitrate, they are representative of the usual readings. I often do a 10% Wednesday water change too, so the Nitrate levels are almost always around 10. However, I skipped last Wednesday, so the levels are almost 40 today.)
3. The tank is a 55G, and it's been there for a few months. The H2O is cycled.
4. The HOB
is an Aquaclear 110, and the powerhead is an Aquaclear 70. (Both are modified with clear tubing to draw water from the bottom of the tank, and the powerhead has an additional piece to aim the output water toward the top for maximum surface action.)
5. Buddha is alone.
6. The last H2O change was an hour ago, but the water specs (with attached photo) are PRE-change. The last change before that was the previous Sunday.
7. Buddha was brought home from Petco about two years ago, though he has only been in this tank for five or six months.
8. Nothing new in the tank, but the O2
levels have always been low.
9. The food is Saki-Hikari Fancy Goldfish food. I switched from the Petco brand (whatever it was called) a while ago, but the symptoms were present before the switch.
OK, as I said before, I'm at my wit's end. I've tried everything I can think of to help Buddha. I've even tried an API salt treatment. Is there something I'm missing?
Any and all suggestions are welcome and appreciated.