First measurements of alkalinity, Ca and Mg show that I probably did a rather good calculation of my old dosing. I just divided my alkalinity dose with 7, adjust part 2 to the same amount of ml and put 3A and 3B in the same container. The amount of dosed A+B (together) will then be the dubble amount compared with part 1.
Three weeks ago - I took away my GFO reactor because my PO4 was 0 according to Hanna low phosphate. Its still around 0 and the aquarium feels rather stable. I´m looking at my front glass all the time - as long as I will see some algae growth on that - I´m not so worried about the Hanna reading zero. Today I clean my window every second to third day. To use this as an indication works in my aquaria because I have 2 t5 bulbs just above the front window - hence the front window getts enough of light.
I have noted (bad or good) that LED fixtures sometimes does not illuminate the front window very much, hence there will be no algae growth on this window. I once designed the illumination of an aquaria in this way just because of my laziness (I do not like scraping windows

) with this new aquaria - i use the algae growth on my front window as an indicator of nutrients instead.
And the algae I scrape away every second to third day - food for my filtraters
Sincerely Lasse