How about potassium citrate?

[grshs_vny]

hi ,yesterday i was thinking about a alternate to potassium sulphate,which i have used for more than 3 years and potassium citrate popped in my mind ,but i am worried about the citrate part as it decreases ph and the water supply which i have is soft and low in alkalinity.i can also use potassium bicarbonate,which suits my needs(KH)but want to try citrate.
any inputs?

 

[Yo-han]

Would go for bicarbonate, citrate isn't (or at least minimal) used by plants, so you only have a built up and risk of low pH.