Calc,Alk,PH issues

[ashr]

Hey all

So I have been having some algae issues with my tank lately and lost some corals but I've been busy and a little out of touch with my tank so I didn't notice some of levels were off. My doser has been having issues with the Calc and not adding enough and my ALk was being added way more.

Calc is around 300
Alk is about 11
PH is 8.7

what would be the best way to lower my PH at this time as it is way to high. I've stopped dosing Alk and will replace all my hoses for everything.


any thoughts?