I calibrated the ph probe today using 7.0 and 10.0 calibration fluid.
The reading constantly drops.
Started off at 8.2 and continued to drop currently showing just above 7.0.
I tested with my liquid test kit and it shows 8.2-8.5
whats going on?
			
			
									
						
							Ph Dropping
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				rimai
 - Posts: 12857
 - Joined: Fri Mar 18, 2011 6:47 pm
 
Re: Ph Dropping
I was looking at the history of your controller.
It seems it was good for an hour or so and something changed at 9:30pm.
Do you remember doing anything at that time?
Does anything turn on at that time?
Can you check your float switches?? Maybe the exposed leads are touching the water?
			
			
						It seems it was good for an hour or so and something changed at 9:30pm.
Do you remember doing anything at that time?
Does anything turn on at that time?
Can you check your float switches?? Maybe the exposed leads are touching the water?
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							Roberto.