More about my nutrition problem
I have now made my weekly water change and that also shows that something is wrong.
In past weeks the nutrition level has been very stable during the week and the start and ending levels has been quite equal, but this week the nutrition levels were about twice the level on the measurable substances.
I have also checked the pH and KH to rule out the CO2 level and controller problems, that was also fine (30-40ppm).
My guess is that something is limiting the plants and my guess is still Ca.
One thing that feels funny is that the problem seems to have accelerated with the ongoing summer heat, but on the other hand the plant mass has grown a lot also during the same period.
I will keep my additional Ca dosing for 3-4 weeks and not change anything else to check if it helps.
