Topics merged. Please keep everything related to a single project/issue/question together in one place.
The recommended levels are normally all you need to worry about. It is normally only worth calculating the CSI if you are unable to remain within the normal ranges of one or more of the levels (for example high TA or CH fill water). Similarly, keeping track of CSI is not sufficient, you have to pay attention to the recommended levels anyway, even when you are also tracking CSI.
CSI only tells you how your plaster is likely to be affected by the water, but that is far from the only issue that needs to be kept track of. The recommended levels are designed to take care of all of the common issues, not just plaster issues.
Finally, CSI can be a fair bit lower than where you have it now without issues.
The recommended levels are normally all you need to worry about. It is normally only worth calculating the CSI if you are unable to remain within the normal ranges of one or more of the levels (for example high TA or CH fill water). Similarly, keeping track of CSI is not sufficient, you have to pay attention to the recommended levels anyway, even when you are also tracking CSI.
CSI only tells you how your plaster is likely to be affected by the water, but that is far from the only issue that needs to be kept track of. The recommended levels are designed to take care of all of the common issues, not just plaster issues.
Finally, CSI can be a fair bit lower than where you have it now without issues.