It has been one more good week. I started using only RO water for the feeding and they seem to like the lower EC. I used up the Ultra MG, there was only 500ml in the combo pack, so I ordered a new one and one more combo pack. I'm happy with this brand of nuts, so I'll keep using them.
There are clear signs we are approaching the finish line.
I lowered the humidity to 45, and I think I'll go down to 40 next week as there are so seriously thick buds in there. I've also turned the ventilation to max.
It will be interesting to see how long it will take them to finish, since they are 75% sativa.
@Cyrusdavirus,
Thanks! I must say I was a bit time pressured, so I've only topped them twice and LSTed the main branches. But even so I'm pretty happy with the results :) Thanks again! ;)