Hi guys,
My tank has been running since October, but my first stock all turned out to be sick (will not be going to that LFS again) so after they passed, I let the tank run empty until last Thursday 2/9 (dosing with NH3 etc.). I ordered 6 panda corys from LiveAquaria, 2 guppies, and 10 RCS. 2 of the corys were sick upon arrival (pop eye and fin rot). Fin rot died within 48 hours, pop eye died the following day and another cory got pop eye and died the same day. The guppies look fine, I've lost 5 shrimp, but now my other 3 corys look sick with SOMETHING I cannot identify.
I've been treating with Melafix and Pimafix (this is day 4) as per bottle instructions. My parameters according to API's liquid test kit are pH = 7.0, NH3 = 0.0pm, Nitrite = 0.0ppm, GH = 4-5, KH = 2 (last I checked a few days ago), and Nitrate = 20ppm (last I checked a few days ago). Freshwater 20 gallon high with an AquaClear 50 filter planted tank at a constant 78F (no CO2, I dose with Excel). I haven't done a water change (100% RO with Seachem Equilibrium and Alkaline buffer for GH and KH) since getting them yet because the medication instructions specifically say NOT to change the water until 7 days of treatment, then do a 25% change. However, my current plan is to do 30%+ changes 1-2 times a week.
Here are some pictures of the poor little guys (2/3 because at the present moment I can't even FIND the third)
Panda cory no. 1

Panda no. 2

I apologize for poor image quality but any help would seriously be appreciated!!! I really don't know what to do. It almost looks like their skin is sloughing off or as though it's covered in white fuzzy slime. Doesn't look like ich to me but honestly no idea.
Ugh I'm hating my freshwater luck.
My tank has been running since October, but my first stock all turned out to be sick (will not be going to that LFS again) so after they passed, I let the tank run empty until last Thursday 2/9 (dosing with NH3 etc.). I ordered 6 panda corys from LiveAquaria, 2 guppies, and 10 RCS. 2 of the corys were sick upon arrival (pop eye and fin rot). Fin rot died within 48 hours, pop eye died the following day and another cory got pop eye and died the same day. The guppies look fine, I've lost 5 shrimp, but now my other 3 corys look sick with SOMETHING I cannot identify.
I've been treating with Melafix and Pimafix (this is day 4) as per bottle instructions. My parameters according to API's liquid test kit are pH = 7.0, NH3 = 0.0pm, Nitrite = 0.0ppm, GH = 4-5, KH = 2 (last I checked a few days ago), and Nitrate = 20ppm (last I checked a few days ago). Freshwater 20 gallon high with an AquaClear 50 filter planted tank at a constant 78F (no CO2, I dose with Excel). I haven't done a water change (100% RO with Seachem Equilibrium and Alkaline buffer for GH and KH) since getting them yet because the medication instructions specifically say NOT to change the water until 7 days of treatment, then do a 25% change. However, my current plan is to do 30%+ changes 1-2 times a week.
Here are some pictures of the poor little guys (2/3 because at the present moment I can't even FIND the third)
Panda cory no. 1



Panda no. 2

I apologize for poor image quality but any help would seriously be appreciated!!! I really don't know what to do. It almost looks like their skin is sloughing off or as though it's covered in white fuzzy slime. Doesn't look like ich to me but honestly no idea.
Ugh I'm hating my freshwater luck.