Lost clown loaches!!

[Squid]

Need advise. suddently 3 of my large clown loaches died. its rainy season here and I did not have a heater. I noticed there was a red hold on my plecos back, but i just ignored it. not i lost 3 clown loaches. Ive added salt and increased temperature to 28 any advise?
i still have 7 pcs, though 2 of the biggest died

[Haohao]

What is ur tank size... Ermm... Pond size perhaps?

[Squid]

My tank
Is 300 gallon with 75 gal sump



Here's a picture of one of the clowns ive lost so far 7 pieces remaining seem to be normal but ibe treated the tank with antibiotics , have to keep a heater whole year round i guess

[Haohao]

oh my your fish looks so sad....may i know how big is it? mine is currently 4 inches. i keep a pair =)

[Squid]

Its 7 inches loat 2 7 incher and 1 5 incher

[Steven87]

I also lost 3 cloan loaches during the last 2days. Before they died, their mouth appear red n swollen. All 3 had the same symptoms

[Squid]

Originally Posted by Steven87

I also lost 3 cloan loaches during the last 2days. Before they died, their mouth appear red n swollen. All 3 had the same symptoms

for mine, 2 had lots of slime coating on them , but they were dead,
the 3rd one looked like it had no slime coat.
so far I have 7 more , I've already treated with antibiotics. hope it works
i've had these loaches for about 5 years i think

[dracoken]

Bro..u might wanna make some water change and add a heater in the mean time...wat r the diet that u feed for ur fishes recently???

[Squid]

Originally Posted by dracoken

Bro..u might wanna make some water change and add a heater in the mean time...wat r the diet that u feed for ur fishes recently???

thanks bro. My fishes diet is sinking pellets and occasionaly small frozen shrimps.
i've added 2 heater and also antibiotics.
not sure if it got too cold, and i transferred my arowanas from that tank into another tank.
so i removed 60% water and added it back once the aros are in the opther tank. might have allowed the temperature to drop too much?