Nah...The tap is pretty constant in the neutral range. It's the buffering capacity. My water here crashes hard for no apparent reason although my setup has been pretty stable since I added a boatload of crushed coral....Last tig I lost was about a year ago, but I've been a little bit gunshy to try another one. Maybe one day, haha.
EDIT:
To add, it wasn't the bio load that caused the ph dips either. The tigs I had all were kept separately in a growout tank. Everything would be fine, then BAM....belly up the next day.
EDIT:
To add, it wasn't the bio load that caused the ph dips either. The tigs I had all were kept separately in a growout tank. Everything would be fine, then BAM....belly up the next day.

