Heeeere we go! Sorry for the late update!
This is when I start the flush! I believe the plants are pretty much ready at this point and doing this will just improve the final product!
Doing this took me a good chunk of time, mostly because I didn't know exactly how much of water I was going to need (it was a loooot 😫) and how hard/tiring it was to pH it as well. In the end my calculations were off, as I needed far more water than what I had (lol) so I didn't manage to do a full flush... but I still managed to lower the amount of salts and residues to a "decent" level (around 850 to 1500 ppm). I also used flawless finish so I suppose than even when I didn't use enough water that solution alone was enough to help!
Besides that the rest of the week was quite calm and relaxing.
Thanks everyone for reading! 😍