Amnesia Auto & OG Kush in 2x2x4 Tent

SUMMARY: The Amnesia is showing some slight nute burn at the tips of some leaves. I have been monitoring the runoff pH which whilst it varies from the input pH more than I would have thought it is now always within range. This week I switched to the updated GWE late bloom nutes for the OG and continued with the Sensi Garden peak bloom nutes for the Amnesia. The OG is now drinking more and giving less and less runoff from 5L input. I continued with some light defoliation removing the odd lower leaf and some fan leaves covering bud sites that I couldn't tuck. DAY 86 -------- Friday 27/11/2020 I fed the plants. GWE 04/2020 updated schedule Week 9 Late Bloom nutes for the OG and then the Sensi Garden Peak nutes for the Amnesia. The Amnesia reportedly doesn't require lots of nutes and I can see some mild nute burn on a lot of the leaves and so I will continue with Sensi Garden Peak Flowering nutes until its time to flush. OG (in) = 5L pH 6.3 OG (out) = 0.7L (14%) pH 5.4 [0.9 drop] Amnesia (in) = 4L pH 6.2 Amnesia (out) = 1.2L (30%) pH 5.5 [0.7 drop] I have no idea why there is a 0.9 drop in pH now when just days ago it had reduced to 0.2-0.4. I don't suspect this is a sign of an issue but it makes me question whether there was ever a pH issue and the OG was just pale due to not getting enough nutrients...which makes perfect sense because it definitely wasn't getting enough nutrients. Either way I don't like the runoff being outside of range and so I'll bump the input back up to 6.5 until the output gets closer to 6.0. DAY 88 -------- Sunday 29/11/2020 I fed the plants. GWE 04/2020 updated schedule Week 9 Late Bloom nutes for the OG and then the Sensi Garden Peak nutes for the Amnesia. OG (in) = 5.5L pH 6.5 OG (out) = 0.9L (17%) pH 5.3 [1.2 drop] Amnesia (in) = 4L pH 6.5 Amnesia (out) = 1.55L (39%) pH 5.6 [0.9 drop] I'm getting real annoyed with how much the runoff is varying in pH from the input as everything I read online states this is indicative of an issue...but I am doing everything possible to ensure these plants are getting what they need and managing the pH EVERY time I feed/water. It just doesn't make sense and I can see how this is such a learning curve as every plant is so different and this is nothing but shades of grey. I plan of chopping both on Sunday 13/12/2020 which is exactly 2 weeks today, that gives each plant a total of 102 days since seed with the Amnesia at 66 days (9 weeks) of flower and the OG at 41 (6 weeks) days of flower. Looking at the trichs today I reckon that will be a good compromise of not too late on the Amnesia (before it gets too heavy on the CBD) and not too early for the OG (so it should still be a nice smoke with more of a lighter head high). DAY 90 -------- Tuesday 01/12/2020 I watered the plants with pH'd tap water. The OG is drinking a lot the last week or 2, giving it 5L every 48hrs and the runoff is always below 20% and the top layer of coco is always bone dry come next feeding time. The Amnesia on the other hand is the complete opposite seemingly drinking less and less as time goes on. Even with as little 3.5L every 48hrs I'm getting an average of 40% runoff. OG (in) = 5.5L pH 6.6 OG (out) = 0.55L (10%) pH 5.6 [1.0 drop] Amnesia (in) = 3.5L pH 6.4 Amnesia (out) = 1.4L (40%) pH 5.8 [0.6 drop]