pH / KH crash
The past week i have had some strange thing happening to the aquarium;
My drop checker became bluer and bluer the last days of the week, i checked the controller, everything seemed fine, checked the CO2 cylinder, not empty, checked the KH, not measurable.
Changed water and everything seems to be back on track again.
This would probably have been really bad if i didn’t have a controller, as i did it shut of the CO2 as seen in the graph, otherwise the pH probably had gone through the floor.
What made the KH not measurable is a riddle to me but probably something was wrong with the tap water as the on / off seen in the graph is very narrow the last week.
Maybe somethin at the water company?
Bottom line; don’t trust a single indicator for the CO2 level, without the drop checker i would not have seen the problem, without the controller i might had turned the CO2 up and probably caused a pH crash with dead fish as a result.
