Oxygen level over one week
I have now run the logging on the different probes for a while and I have seen some interesting things on the oxygen graph.
Water change:
It shows quit clearly why the bubbling gets so intense after the water change.
The oxygen level in the tap water is enormous and the oxygen level in the tank gets so high that every single piece of oxygen the plant produce becomes a bubble due to the high oxygen concentration in the tank.
Weekly trend:
The blue line shows that something happens between Tuesday and Wednesday, this happens despite the fact that the routine is exactly the same as the other days, if you look at the top value for each day which is at the lightning off time it clearly shows a rising trend Sunday through Tuesday but Wednesday through Friday it has changed to a falling trend.
To find the course of this i added a little CaCl2 on Thursday morning the following week (purple line) after confirming that the trend from the week before still was there (falling at Wednesday). This showed something quite interesting, as you can see Thursday and forward changed to a rising trend after this….
I will verify this a couple of times at to be sure that it was not a one time thing, i will be back.
