@MarihuanaMichel, thanks bruv. i cheat slightly by doing diary entries on swap days. that is why you see the consistency across the EC/pH values week over week. RO input water, strict measuring and mixing and cleaning procedures, and quality fert. it def changes throughout the week. in general, i do a standard two bucket commercial hydro set up. basically clean swaps of the system regularly, with mid-week or as needed half strength top offs. for this grow in particular, they are munching through that solution so quick i almost cant keep up. had a 24 hour period drop from 2EC to .7 EC/ granted, they have slowed down quite a bit on their salt uptake...
one thing i usually put in my diaries somewhere is that the metrics you see are targets in the first place. for example, my tent isnt sitting at exactly 60% RH 24/7. it is constantly converging to 60% though. in some ways it is lazy diary creating, and in some ways it gives a more accurate picture of the weekly flow of the tent
will be giving her some special ferment type products in the coming days and a major defoliation now that they have stretched