Any specific order to correct chemistry?

[LordDunlow]

I kept up with chlorine and pH over the winter in my pool, but it has been just too cold to run the whole gamut of TF-100 over the winter. Just finally started to get a couple warm days together.

TA is 30
CH is 100
CYA is 50

Everything else is okay.

Can I add bicarbonate, calcium carbonate, and CYA all at the same time, or should I do one at a time?

If one at a time, which first?

Thanks

 

[Alwayswantedapool]

They can all be added at the same time but make sure and follow the instructions in the link below.
Pool School - Recommended Pool Chemicals

 

[Texas Splash]

You should also consider updating your signature with all of your pool info (like mine below) so we know what you have since that can sometimes influence the recommendations to your question. But for the 3 items above, Mark is correct.