Can you give us more info on your situation;
a. Tank gallons/size
b. Stocking/inhabitants of tank
c. Exact test results for ammonia, nitrites, nitrates etc.
d. Length of time you have owned the panda and the tank has been set up.
e. Feeding regime
f. Tank cleaning regime
etc etc. Please give us as much info as posible, as until you do we can only guess at what happened. There was no need to treat for swimbladder disorder unless the cory could not control the direction in which it swam (i.e. swimming upside down, in spirals etc).
a. fish r fun hex (http
/www.rocketaquatics.co.uk/product_info.php?cPath=72_137_138&products_id=254&osCsid=9392d78c4fe4d9560f1a49cd4dc5cc83) Filter and so on that comes with it, air pump, sand, and clay pots for caves. (photo of panda town:
http/10.0.0.101/~saphphx/plecncory/PandaTownLineUp.jpg)
b. had 16x 1-1.5cm pandas, 1x 1.5-2cm albino bronze
c. nitrate: 0ppm - 5.0ppm, but closer to 0 on the colour chart, Ammonia:0ppm - 0.25ppm but closer to 0 on the colour chart, nitrite: 0ppm, pH: 7.2. Tempature: 77 degrees f.
d. Bought the pandas on 15/03/07, they went into H2 (Hold 2) on the same day, treated with 1/2 dose of liquasel tonic. Carbon and 20% water change done on 17/03/07 early morning, problems started 18/03/07 at 2am, when I noticed I did a 50% change, took carbon out, and treated with 1mm swim blatter treatment as per instructions.
e. live food or frozen blood worms in the morning, live microworms or baby brine shrimp in the after noon, sinking pellets or a tubaflex cube in the evening, sometimes a little soaked flake just before bed.
f. 10% change once to twice a week AND 25% once a week on fridays, sometimes a bit more as its a little over stocked at the moment. Non-q tanks I do 1x 40% change for most per week, normally 2-3 10% changes throughout the week, depending on the tank.
The fish started with his head under a pot, when I went to get him out, he took off, swimming in tight spiral, though in a fairly straight line, he came to rest and slowly drifted upside down, waited a bit and took off again, then settled, and stayed upright for a moment, before going upside down again.
Also water parameter(temp, ph and gh/kh), the filter set upbeside what Tokis-Phoenix asked. I find Pandas like highly oxtgenated cool water with current, well at least mine does. I keep mine with HOB and powerhead with sponge. I have all the info in one of my thread.
Also did your Pandas made many trip to the surface to gabble up the air last night? More often so than usual?
I dont have test for gh/kh, though I know form keeping apple snails that there is little calcium in the watr. I keep the tank well oxygenated and the tank around 77F, though it will drop sometimes to 75F, so during the cold spell I added a heater to the tank to keep the temp a bit better (the whole fish room is heated to 78, keeping the tanks around 77, except when its stupidly cold, like it is at the moment, when I have to plug everyone's smaller heaters back in)
Only one or two have gone to the top, then back down, in normal cory fashion. None seem to be gobbling for air and so on. They have a bit of a current from the filter.
In the bigger tank (3 foot) I have sand, a fluval 4 and an intrapet 2 for flow on the bottom and top of the tank. The pandas are in a holding tank for a week to be sure they're not ill, then will be joining the other pandas in the large tank.
Pandas are the hardest corys to keep there very sensitive and in the lfs its pot luck you get some that live some that die. so its realy hard to get some to survive.
sorry for your loss.
The last lot I lost had been half eaten by barbs at the LFS while I was waiting to collect them
These all looked really good, and still look really good, except two are dead...