Dosing and water changes?

OK I am dosing Mag to raise it and was wondering do you hold off on a water change or do the water change and not dose that day. My parms are all OK except the things I am and will be dosing for.

 

I dose Mag with the water change

 

Yup, I typically do the mandatory waterchange first, test params second (except salinity and temp are tested before WC, WC water needs to equal DT water), and dose as needed third.

 

skip

 

I dosed magnesium regardless of the water change when I used IO.
Now I have to be careful not to dose to close to a water change because I switched to Reef Crystals.

First time I did a water change with the Reef Crystal is shocked my corals for about 6 hours.

 

Thanks Corailline. I know when I switched to reef crystals everything changed for the better. Dosed for Mag tonight and will check all parms tomorrow, If i need do a water change I will hold on the dose till the next day. Thanks to all