Ca reactor effluent dkh low

youngreef180 · 03/03/2008, 10:40 AM

I have setup the Korallin ca reactor using the millwaukee ph controller. It is currently keeping the effluent in the 6.6 to 6.7 range for the ph while the dkh of the effluent is only in the 18 to 19 range. Everything I have read says you want your effluent to at least have a dhk of 25 while some even say in the 30-50 range. Anyone have any experience with this or any comments I would appreciate it .

Thanks
Jerrod

I am also using the caribsea geo marine florida crushed coral for the media.

papagimp · 03/03/2008, 11:01 AM

may be the media being used. May not dissolve properly at that high of a PH. Just from what i've read this would be my guess. May try lowering the PH control to 6.5 or so and see if that raises the DKH of the effluent enough.

dustin Combs · 03/03/2008, 11:44 AM

Agree with the gimp. Paul used the crushed coral and maybe a few others can chime in on this one.

Bloke · 03/03/2008, 10:23 PM

Just to toss this out there, I have found that I had to calibrate my Milwaukee pH probe for a few days before I got it to measure consistently. I know it sounds wierd, but even after just 24 hours, the pH probe was giving me wrong readings. After about a few days of it in continuous use and daily re-calibration, it finally settled in and gave me consistent readings.

I guess, I am suggesting that you recalibrate. And then recalibrate 24 hours later.

Then, if still not getting what you want after confident in your pH readings, lower it slightly to get to a pH that gives your a dKH reading above 25 consistently. Don't adjust it too quickly, perhaps not more than .1 pH per day.

Just my thoughts...

03/03/2008, 10:40 AM	#1
youngreef180 Moved On Join Date: Nov 2007 Location: Tulsa Ok Posts: 491	Ca reactor effluent dkh low I have setup the Korallin ca reactor using the millwaukee ph controller. It is currently keeping the effluent in the 6.6 to 6.7 range for the ph while the dkh of the effluent is only in the 18 to 19 range. Everything I have read says you want your effluent to at least have a dhk of 25 while some even say in the 30-50 range. Anyone have any experience with this or any comments I would appreciate it . Thanks Jerrod I am also using the caribsea geo marine florida crushed coral for the media.

03/03/2008, 11:01 AM	#2
papagimp COMAS Rocks! Join Date: Apr 2006 Location: Oklahoma City, OK Posts: 8,191 Blog Entries: 2	may be the media being used. May not dissolve properly at that high of a PH. Just from what i've read this would be my guess. May try lowering the PH control to 6.5 or so and see if that raises the DKH of the effluent enough. __________________ 58g Softie & 75g Stoney Member, Central Oklahoma Marine Aquarium Society Current Tank Info: 58g Mixed Reef Project - Started June 2011

03/03/2008, 10:23 PM	#4
Bloke Registered Member Join Date: Jan 2007 Location: Kansas Posts: 425	Just to toss this out there, I have found that I had to calibrate my Milwaukee pH probe for a few days before I got it to measure consistently. I know it sounds wierd, but even after just 24 hours, the pH probe was giving me wrong readings. After about a few days of it in continuous use and daily re-calibration, it finally settled in and gave me consistent readings. I guess, I am suggesting that you recalibrate. And then recalibrate 24 hours later. Then, if still not getting what you want after confident in your pH readings, lower it slightly to get to a pH that gives your a dKH reading above 25 consistently. Don't adjust it too quickly, perhaps not more than .1 pH per day. Just my thoughts... __________________ http://www.rowe lab.com/AquaController/sig.php?n=Bloke Current Tank Info: 90g Reef

03/03/2008, 11:44 AM	#3
dustin Combs Moved On Join Date: Oct 2004 Location: OKC,OK. Posts: 1,555	Agree with the gimp. Paul used the crushed coral and maybe a few others can chime in on this one.