Thermal Shock

[BigbruiserAl]

Wheres the line here? I did a 125L water change in my 350L. My tank sists at 25c added some prime and put the hose in what i didt expect was the temp to drop to 20c. It does have a 200w & 300w so its only taken 4hrs to get back to 25c. I know a slight drop is drop is good for them but where's the line?

 

[StandbySetting]

I can't see that doing too much harm if I'm honest, rainfall in the wild will cause temperature fluctuations, if it were me aid aim for a drop of no more than 2-3[sup]o[/sup]C.

 

[BigbruiserAl]

Might be a can of worms here but why do we float the fish when new then? most tank are 24c (common fresh water i mean) it will only be a 2-3 c drop just floating bags. I always float for 20 min then change water of the bag -20% from the bag and add 20% from tank wait 20 min the do a -50% and add 50% tank water another 20 min wait before i let them in the tank, but some ppl just just float and realese

 

[StandbySetting]

It can further stress an already stressed fish, balancing the difference in water chemistry is more important IMO.

 

[The chilly dipper]

hence introducing tank water into the bag bit by bit.
its is all about water chem.

it is said to be possible to kill a fish by changing the water quality too fast too.