>>5030138
No, it's 100% the air pump.. there is 0 doubt. I did some testing with my tap water after finding an old reddit thread. I took 200ml of tap water, measured it's temp, turbidity, µS/cm and pH with my electric stick thingy. Out of the tap it was
>27.5°C, 7.25 pH, 544µS/cm, 272ppm
Then I let it stand free in my room for 24hours and measured again.
>25.7°C, 8.2 pH, 550µS/cm, 278ppm
So it's as the people on reddit said, my tap water is pumped full of gas that changes the pH. Letting it air out over 24hours gives me the "real pH".. and that's exactly what my airpump does. Helps get rid of too many gasses.

I live in switzerland, we have about the hardest water on the planet as far as I know. If I stick any test strip in it, it glows purple like it's radioactive.

>>5030149
I do maintenance. I collect dead things, cut my plants back, replant cut plant parts, vacuum the sand floor, clean my pump thoroughly and it's filter, take the wood decor out and scrub it off, razor blade the glass.. I just don't wanna do maintenance on water and it's parameters if that makes sense. I just wanna mix my RO water with my tap water in a bucket to achieve my wanted parameters and then drop it in with the little drip tube I built.