Water Changes

[aquamike]

Hi everyone,

I have a 135 gallon stocked with mostly angelfish and tetras. I gravel vac and change out 25 to 30% of the water weekly.

I have had my fish for over 6 monthes and all of them are very healthy. The water parameters are in check. When i add the new water, the fish seem to breath very rapidly and somewhat shake their head and flare their gills for a few minutes.

I make sure the water being added is within a degree of their normal temp and i add start right water conditioner prior to adding the water.

Is this fish reaction normal or am i doing something wrong that could eventually harm the fish?

Thanks for the input,
Mike

 

[radioman]

Are you using a water dechlorinator?

 

[aquamike]

Are you using a water dechlorinator?

Yes,
I make sure the water being added is within a degree of their normal temp and i add start right water conditioner prior to adding the water.

Mike