Highest natural pH (no additives)

karimwassef · 11/14/2017, 09:50 AM

I set up a reef tank outside with ridiculous aeration...
I used RC salt (6 bags) and 300 gals of RODI.

I'm reading 8.45 post-cal... I wouldn't expect it to be that high so I suspect the cal fluids. I put the probe in the cal solutions and got 7 and 10.

Would fresh air (large surface + heavy air injection) drive so much CO2 out to drive the pH that high?

SAT · 11/14/2017, 02:15 PM

I can imagine that RC was tweaked for use indoors, expecting a higher CO2 level.

bertoni · 11/14/2017, 06:08 PM

I think that's a reasonable level for a high aeration tank. It's a bit higher than I'd expect, but RC tends to come with a fairly high dKH. That might account for the extra 0.5 units or so.

karimwassef · 11/14/2017, 06:19 PM

Ok. I'll measure the other 3 soon. It's slowly coming down to 8.37 after 48 hours

11/14/2017, 09:50 AM	#1
karimwassef Registered Member Join Date: May 2004 Location: Dallas, TX Posts: 11,033	Highest natural pH (no additives) I set up a reef tank outside with ridiculous aeration... I used RC salt (6 bags) and 300 gals of RODI. I'm reading 8.45 post-cal... I wouldn't expect it to be that high so I suspect the cal fluids. I put the probe in the cal solutions and got 7 and 10. Would fresh air (large surface + heavy air injection) drive so much CO2 out to drive the pH that high? __________________ Failure isn't an option It's a requirement. 660g 380inwall+280smp/surge S/L/Soft/Maxima/RBTA/Clown/Chromis/Anthias/Tang/Mandarin/Jawfish/Goby/Wrasse/D'back. DIY 12' Skimmer ActuatedSurge ConcreteScape

11/14/2017, 02:15 PM	#2
SAT Registered Member Join Date: Apr 2001 Location: Berwyn, PA Posts: 4,073 Blog Entries: 1	I can imagine that RC was tweaked for use indoors, expecting a higher CO2 level. __________________ Stuart Current Tank Info: 300G Caribbean biotype reef set up in 2003.

11/14/2017, 06:08 PM	#3
bertoni RC Mod Join Date: Mar 2002 Location: Mountain View, CA, USA Posts: 88,616	I think that's a reasonable level for a high aeration tank. It's a bit higher than I'd expect, but RC tends to come with a fairly high dKH. That might account for the extra 0.5 units or so. __________________ Jonathan Bertoni

11/14/2017, 06:19 PM	#4
karimwassef Registered Member Join Date: May 2004 Location: Dallas, TX Posts: 11,033	Ok. I'll measure the other 3 soon. It's slowly coming down to 8.37 after 48 hours __________________ Failure isn't an option It's a requirement. 660g 380inwall+280smp/surge S/L/Soft/Maxima/RBTA/Clown/Chromis/Anthias/Tang/Mandarin/Jawfish/Goby/Wrasse/D'back. DIY 12' Skimmer ActuatedSurge ConcreteScape