Low Ph help please..

The water Im using has a PH of only 7.6.. too low for my few month old
reeftank. It is advised not to keep depending on buffers like ph plus etc
and also I have to use a lot as tank is about 250 G.

One suggestion was to add some dead coral as decor and also crush some coral
and add to substrate- This seems logical as every water change lowers my ph
anyway and this may be a sound and stable method.

Will this be the right thing to do?

Thanks,

Ajay