Advice on how to do water change

[paice]

Hi, i know that i need to change at least 1/3 - 1/4 of water every week or so since i dont have any live plants. (and it is a 15-20 gallon tank), but every time i do it, i seem to disturb the newts a lot.

Any practical thoughts would be greatly appreciated.

 

[sde]

A siphon works well, and doesn't cause to much disturbance if done right.

 

[Azhael]

You should do water changes that are between 20-10% of the total volume. Larger water changes can be too much of a shock both for the newts and very importantly for the bacteria. Make small water changes and just increase the frequency if necessary.