Water Testing

[oldoak66]

Hi,

How long after a large water change (80%) can you accurately do water testing? I'm sorry if that is a "how long is a piece of string" question but I did a large water change today after cycling and getting ready for my fish tomorrow and I want to test the water before I put fish in so was wondering how long after a change it would be "stable" enough to do a test?

Thanks in advance.

 

[ArauraDiscus]

Everything should be homogenous throughout the tank in about an hour. So probably by now your good to go.

 

[oldoak66]

Speedy response - thanks very much. I'll get my tubes out

 

[doresy]

Hi,

How long after a large water change (80%) can you accurately do water testing? I'm sorry if that is a "how long is a piece of string" question but I did a large water change today after cycling and getting ready for my fish tomorrow and I want to test the water before I put fish in so was wondering how long after a change it would be "stable" enough to do a test?

Thanks in advance.

You cycled your tank?............Hey that deserves a big

 

[Aphotic Phoenix]

The only result that may be a little off is the pH. The pH of tap water is often temporarily lowered due to carbon dioxide being dissolved in the water, which is why to properly test the pH of your tap you have to let it sit out for overnight.

 

[oldoak66]

You cycled your tank?............Hey that deserves a big

Why, thank you very much! It took all the patience I had and then some!

 

[ArauraDiscus]

The only result that may be a little off is the pH. The pH of tap water is often temporarily lowered due to carbon dioxide being dissolved in the water, which is why to properly test the pH of your tap you have to let it sit out for overnight.

It will be so majorly miniscule that you won't notice the difference now or then, liquid or test strip.

 

[Tiger Barb]

It will be so majorly miniscule that you won't notice the difference now or then, liquid or test strip.

Dunno about that.... my water comes out of the tap and tests at 7.5 with a liquid test. Leave it for 24 hours and it goes up to about 8. I can certainly notice the difference! (Unless, of course, there is another reason - in which I would be VERY interested!)