Amnesia Auto in a Solo Cup

SUMMARY: This week I have continued with 200ml total intake per day and getting 20-30% runoff. I started with the week 2 nutes on day 12. I'm seeing green-tinged perlite which is concerning as surely it can only be mould. Though I'm not sure how thats occurred as the coco has been drying out in between feeds. DAY 8 ------- Tuesday 5th January 14:00 The medium still looked damp however it's such a small pot I feel I'm not watering frequently enough and so I gave it 150ml nutes now and plan on giving it more later. It produced around 50ml runoff (33%). [25°C/50%] Tuesday 5th January 20:00 I fed her a further 100ml of nutes which produced 80ml runoff (80%) and so she really doesn't need feeding twice per day yet. [25°C/50%] DAY 9 ------- Wednesday 6th January 15:00 Coco was still moist/damp so left her be though I was expecting it to have dried out plenty by now given its only in a solo cup but the coco is still dark and the seedling doesn't look in good health though I cant see what I might be doing wrong. I'm struggling to keep the humidity high in my 2x2x4 tent even with the humidifier on 100% power cant seem to get it above 50% this week [24°C/46%] DAY 10 -------- Thursday 7th January 14:20 She is growing but slowly and very condensed and it looks like it's got mold forming in the medium as the perlite bits are looking green??? With that I will let it dry out and not water or feed until I see dry coco on top at least. [30°C/40%] DAY 11 ------ Friday 08/01/2021 21:00 She looks to have dried out a bit now and I don't want to let her go bone dry so I gave her 200ml of week 1 nutes at a pH of 6.1 which produced 50ml (25%) runoff. I then poured the runoff back through the medium as some of it still looked a bit dry. I then got a further 35ml runoff (17%). [25°C/52%] DAY 12 -------- Saturday 9th January 20:30 I accidentally gave the Amnesia 200ml of week 1 nutes when it was due it was actually due its first lot of week 2 nutes yesterday. As I'm already a day behind schedule now i decided to give her a further 200ml of week 2 nutes which should wash out and replace the week 1 nutes. I collected 200ml runoff (50%). DAY 13 -------- Sunday 10th January 20:40 I gave the Amnesia 200ml of week 2 nutes though the coco had not dried out much from yesterday by the looks of it - still moist. It produced 100ml runoff (50%). [24°C/55%] DAY 14 -------- Monday 11th January 20:40 The coco wasn't even dry on top but was drying. I don't like the thought of the plant only receiving 200ml intake every 48hrs and so I will continue with giving 200ml per day for now. I gave 200ml of week 2 nutes which produced 100ml runoff (50%). The environment was showing 38°C/33% on my small hydrometer however my Inkbird reported 23°C and my bluetooth hydrometer reported 24.7°C/52%. It seems the hydrometer was in the heat path from the electric fan heater. [25°C/45%] <-- guesstimate with the multiple different readings