When i did what you said, and put it at ph 7, my alk spiked to 12+.  Some corals STN'd.  Im still in the Ph high 7  range with alk of 10.  no more losses.  the proof is in the pudding, lol.  :fun4:
you also asked me to run my reactor based on effluent alk level.  Are we still in the 70's?, FYI- Carter is no longer President.  What kit meaasure alk in the 30dkh range without spending $50 a month on ALK reagents.