Timing of ICP test with water changes

[Billgasser]

I have a mixed reef about 9 months old. I have never sent away an ICP test and wanted your opinions on the timing of sending in relationship to water changes. I do approximately 10% every week. My question is. Would you send the ICP just prior to WC or sometime just after or does it matter? I assume you would want to be consistent with future ICP tests in relationship to your WC.
Thank you

 

[Randy Holmes-Farley Verified Community Expert]

Well, either before or after has its own limitations in learning. For most things, 10% is not going to make a big difference. I guess I'd personally want to know before.

 

[Sdoutreefer]

What are you doing the ICP test for?

EDIT: what the heck is an ICP test? lol

 

[saltyfins]

rule of thumb, as I understand it... is if you're consistent with water changes....2 days AFTER one.