Amnesia Auto & OG Kush in 2x2x4 Tent

SUMMARY: The plants are drinking a little more now requiring an average of 3.5L every 48hrs to produce 20-30% runoff. The OG still hasn't started flowring and so I am starting to suspect it is not an auto... DAY 44 -------- Friday 16/10/2020 I made 5L of early bloom nutes (pH 6.2) for the Amnesias next feed and I still have 3L of transition nutes left for the OG. [26°C/55%] DAY 45 -------- Saturday 17/10/2020 06:00pm I gave the plants 3L each of pH'd rainwater and checked for runoff 2 hours later but there was none! I won't give any more water now as I will feed them tomorrow and I only have 3L of transition nutes left for the OG and so I hope to get 20% runoff from this. Might have to up quantity to 3.5L every 48hrs. I have been struggling with maintaining a low humidity and keeping the temps down in the tent the last week. Lowering the dehumidifier to its lowest setting (35% RH) causes the temperature to rise to as high as 36°C but the RH is jumping up to 60-65% at times. I've currently got the dehumidifier set to 40% RH and the temps right now are stable at 26-28°C with the humidity sat around 52% sometimes spiking to 60-63% for 10mins at a time. DAY 46 -------- Sunday 18/10/2020 I pH'd 10L of rainwater to 5.8. I fed the OG the remaining 4L of transition nutes and gave the Amnesia 3.5L of early bloom nutes. I left it 2 hours before collecting the runoff. The Amnesia gave roughly 1200ml (35%) at a pH of 5.5 and the OG gave roughly 1200ml (30%) at a pH of 6.1. [25°C/55%] DAY 48 -------- Tuesday 20/10/2020 08:00pm I fed the plants the remaining 6.5L of early bloom nutes I had pre-made, 3.25L each. Both plants only gave about 100ml runoff (3-4%). My bluetooth hydrometer has broken as of sat night and is no longer giving any readings to my app. I still have 5 hydrometers in the tent in the form of the dehumidifier, and 4 small hydrometers (one on top of coco in each pot, one sat above light and one sat on floor. The issue is that all hydrometers give slightly different readings and so I was sticking to the bluetooth one as a base. However as long as they are all within range now I'm not concerned though I will order another bluetooth hydrometer for convenience. DAY 50 -------- Thursday 22/10/2020 06:30pm I gave the plants some pH'd water. I gave the Amnesia 3.5L and the OG 4L before I started seeing runoff and both gave 1L runoff after checking on it 2 hours later. I haven't been checking how dry or damp the medium is lately and have just been watering every 48 hours and on occasion sometimes twice in 48 hours (though never 2 lots of nutes in 48 hours, one of the feeds is always just water). I'm quite concerned now that the OG has not started flowering as we hit day 50...I've never heard of this and so I'm wondering whether I've got a photoperiod seed by mistake...