1st mix I obtained :
the probleme was that I probably put too much prep7.7 and I didnot reach the creamy paste, it was too liquid...
I kept this mix in a glass just in case you think I can reuse it by adding bleach in it or doing something else, let me know
2nd mix I obtained by doing what they said on instruction on the bleach 9.9 (first water until I obtained creamy paste then prep 7.7 (ratio 1 to 1)) :
I choose to try this instruction cause by starting with bleach9.9 + prep7.7 then add water, my mix was too liquid each time I tried...
The mix seems correct but is not so creamy cause there is a lot of little granulate. It seems that they cannot be solved, I don't know why and I hope it's normal...
here is the mix on s-the seat :
