Problem- Fish Gasping For Air

[perthfishguy]

Hi guys

I have a tank 100cm long 40cm tall 40cm deep, it has been established for over 2 years now. I hadn't done a clean for a while and the water was starting to turn yellow so yesterday I replaced about 40-50% of the water and gave the tank a good clean.

Yesterday the fish looked healthy and today I added some new plants (5 in total)now over half the fish are swimming at the surface and gasping for air- including several clown loaches!

Anyone got any ideas what I should do? Temp is 28C

Cheers

 

[england]

How did you clean the filter?

 

[perthfishguy]

I didnt clean the filter

 

[SlyPolak]

Ammonia problems or not enough circulation?

 

[perthfishguy]

so what do i need to do?

 

[england]

Have you ever cleaned the filter?
whats the flow like from the filter?

do you know you water stats?

 

[perthfishguy]

yes filter wasnt cleaned too long ago and seems to be in good order

 

[Ryefish]

did you dechlorinate the water you added?

 

[perthfishguy]

yes i did dechlorinate

 

[SlyPolak]

As nelly asked what are your water stats? Ammonia , Nitrite , Nitrate , PH , Temp
How did you clean the filter? Tap water/tank water
What is the flow like? As long as you get good ripples you should be good on the o2

 

[perthfishguy]

i dont know what the water stats are
temp is 28

 

[SlyPolak]

Any new additions?
Any changes after cleaning?
If they werent gasping before cleaning and theres nothing new shouldnt be O2.
You should take a sample of your water to your LFS if you can't afford your own liquid tests, you need to be more specific

 

[perthfishguy]

just a few new plants today

do you recommend doing a partial water change for tonight?

 

[SlyPolak]

A water change wouldnt hurt, just make sure you use dechlor and match temps. If I were you I would try to take a sample as soon as possible to get tested

 

[Curiosity101]

I hadn't done a clean for a while and the water was starting to turn yellow

How long is awhile? If it's been a long time any you did a 50% change then it could easily be various different 'shocks' to the fish. pH shock being the most likely.