The pink is correct. Holds up to moisture and the environment better and has significantly more compression strength than the white stuff. Just pick the size you want.
Your bleach/cya sounds roughly OK to start. It depends on the pool size (gallons), strength of your bleach and the FC/CYA you are trying to target. Test daily and adjust to keep at your target.
From here on, you need a full set of test results to know what else may be needed and for ongoing maintenance. Get one of the two recommended testkits. Test strips are not suitable.
Filling out your signature with key equipment including testkit makes it easier for people to help.
Your bleach/cya sounds roughly OK to start. It depends on the pool size (gallons), strength of your bleach and the FC/CYA you are trying to target. Test daily and adjust to keep at your target.
From here on, you need a full set of test results to know what else may be needed and for ongoing maintenance. Get one of the two recommended testkits. Test strips are not suitable.
Filling out your signature with key equipment including testkit makes it easier for people to help.