carbonate hardness high

tiburone9162003

New member
sup guys, i got a question,i been testing my tank every 3 days, last test reading were everything 0, ph was at 8.2, cal 460 and ca hardness bout 161/10, today carbonate hardness was at 214 + or 13 drops, calcium 480 and Ph at 7.8, what can i do to lower that KH and maybe drop calcium too, and i need to make the ph back to 8.0 - 8.2?
 
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