In my case I dosed between 1 and 2 ppm every day for 2 weeks. Then 3 days blackout, and after no dinos to be seen. But nutrients remained high all the time. Once you blackout your nutrients will skyrocket as well (nitrates went from 5ppm to 25ppm). In the meanwhile i dosed phyto, increased pH a bit with a skimmer. I don't know if it is a combination of things or just silicate dosing that after the blackout let the diatoms without competition. Now I can see diatoms growing on my glass so I reduced to 30% the dosing. Sponges are going crazyNow dosing 2 ml per day and I’m not even sure there are diatoms but dinos are worse than ever.
Since testing today I am officially in the « zero Club ». O nitrates and 0 phosphates. Sigh. Now I have to find out how to bring them up.
Does this ever end ?