Problem when adding new fish

[chang]

My 30 lit plant tank using pressurised co2 been running 6 weeks,fish consist of 2 x oto,1 x yamato,2 guppies.But for the past 48 hours,when i put in 3 albino and 2 SAE,these fishes keep gasping for air.PLEASE advice,thanks

edit:SMS lingo

[e[V]o|ut|on]

i think you will need to provide more details regarding your tank.

How much CO2 are you on? How long is your CO2 on?

[milk_vanilla]

Shock therapy to the new fishes ;-)

Sent using Tapatalk 2

[chang]

my co2 is at 1bps using those normal glass diffuser.the exsiting guppies etc are healthy,THAT'S why im really puzzled.

Edit:SMS lingo

[felix_fx2]

What you mean by 30lit tank?
30cm? Or 30watts lighting

Have you confirmed it by turning off the co2? You can narrow down the list of suspects.

If tank specs were given, it might be better. Rather then making people guess.

[chang]

Oops...Im sorry.
Tank=45x25x25.
boyu ef 05.
Aquazonic T5 light 12000k x2.
Co2 2 1bps.
Plant consist of pearlgrass,glosso,riccia & japanese hair grass