Hardwater nutrient in soft water

Im using the GHE trio series for hardwater, but im start preparing for softwater, since im going to buy ro water system. Is it somehow a possibility to use the GHE i already got for hardwater, in the softwater ? What is the difference ?

You can use it.......you might need a calmag supplement because the hardwater micro has less calcium than the regular.

MickFoster said:

You can use it.......you might need a calmag supplement because the hardwater micro has less calcium than the regular.

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Thats all i had to know, thanks!