Judging by your diary I would say phosphorus deficiency. I don't believe BioGrow has any in it. Bone meal is an organic supplement for phosphorus if you're trying to go in that direction.
Also check pH and EC because you may have other deficiencies it appears. It's possible you have a nutrient lockout.
sompas D46 feed bio grow 4ml/litre , root juice 1.5ml/litre with 1200ml mixed water
Just recovery from ph problem
-Day 48 feed bio grow 4ml/litre , root juice 2ml/litre , magne-cal+ 1ml/litre with 1500ml mixed water
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Used techniques
LST
Technique
Defoliation
Technique
8
Week 8. Vegetation
6y ago
1/7
15 cm
Height
18 hrs
Light Schedule
27 Β°C
Day Air Temp
6.5
pH
55 %
Air Humidity
24 Β°C
Night Air Temp
15 liters
Pot Size
1.5 liters
Watering Volume
60 cm
Lamp Distance
Nutrients 3
Bio-Grow
4 mll
Root-Juice
2 mll
Magne-Cal +
1 mll
sompas -Day51 just water PH 6.3 to wash soil 2000ml
-Day53 feed bio-grow 4ml/litre, root-juice 2ml/litre, magne-cal+ 1ml/litre in 1500ml mixed water
-Day56 feed bio-grow 4ml/litre, root-juice 2ml/litre, fmagne-cal+ 1ml/litre in 1500ml mixed water
sompas Day60 first day flowering , scrog setup, feed bio-grow 4ml/litre , Magne-cal+ 1ml/litre with 2000ml mixed water
D61 feed bio-grow 3ml/litre, bio-bloom 1ml/litre, top-max 1ml/litre, Magne-cal+ 1ml/litre with 1800ml mixed water
D64 feed bio-grow 4ml/litre, bio-bloom 1ml/litre, top-max 1ml/litre, Magne-cal+ 1ml/litre with 1800ml mixed water
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Used techniques
ScrOG
Technique
Defoliation
Technique
11
Week 11. Flowering
6y ago
1/5
35 cm
Height
12 hrs
Light Schedule
27 Β°C
Day Air Temp
6.5
pH
55 %
Air Humidity
24 Β°C
Night Air Temp
15 liters
Pot Size
1.8 liters
Watering Volume
50 cm
Lamp Distance
Nutrients 4
Bio-Grow
3 mll
Bio-Bloom
2 mll
Top-Max
2 mll
sompas First week of flowering she most stretch in the tent.
Day68 feed bio-grow 3ml/litre , bio-bloom 2ml/litre , top-max 2ml/litre , magne-cal+ 1ml/litre with 1800ml of mixed water PH adjusted 6.2
Day73 feed bio-grow 3ml/litre , bio-bloom 2ml/litre , top-max 2ml/litre , magne-cal+ 1ml/litre with 1800ml of mixed water PH adjusted 6.2
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12
Week 12. Flowering
6y ago
1/10
35 cm
Height
12 hrs
Light Schedule
27 Β°C
Day Air Temp
6.5
pH
55 %
Air Humidity
24 Β°C
Night Air Temp
15 liters
Pot Size
2 liters
Watering Volume
50 cm
Lamp Distance
Nutrients 4
Bio-Grow
2 mll
Bio-Bloom
3 mll
Top-Max
3 mll
sompas Flowering day 16 flush plant with 4litre of 6.0 PHed water
Flowering day 19 do defoliation and feed bio-grow 2ml/litre , bio-bloom 3ml/litre , top-max 3ml/litre , magne-cal+ 1ml/litre with 2000ml of mixed water
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Used techniques
Defoliation
Technique
13
Week 13. Flowering
6y ago
1/9
42 cm
Height
12 hrs
Light Schedule
27 Β°C
Day Air Temp
6.5
pH
55 %
Air Humidity
24 Β°C
Night Air Temp
15 liters
Pot Size
2 liters
Watering Volume
45 cm
Lamp Distance
Nutrients 4
Bio-Grow
2 mll
Bio-Bloom
3 mll
Top-Max
3 mll
sompas Day 25 of flowering feed. BIo-grow 1ml/litre , bio-bloom 2ml/litre , top-max 2 ml/litre , magne-cal+ 0.5 ml/litre with 1litre of mixed water
Day 28 of flowering feed only 2000ml water ph6.3
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14
Week 14. Flowering
5y ago
1/9
42 cm
Height
12 hrs
Light Schedule
27 Β°C
Day Air Temp
6.5
pH
55 %
Air Humidity
24 Β°C
Night Air Temp
15 liters
Pot Size
2 liters
Watering Volume
45 cm
Lamp Distance
Nutrients 3
Bio-Bloom
1.5 mll
Top-Max
1.5 mll
Magne-Cal +
0.5 mll
sompas Week3 had to deal with PH issue.
Flowering day 30 feed magne-cal+ 0.5ml/litre on 2000ml of mix water.
Flowering day 32 feed bio-bloom 1.5 ml/litre , top-max 1.5 ml/litre , magne-cal+ 0.5 ml/litre on 2000ml mixed water
Flowering day 35 feed magne-cal+ 1.5ml/litre on 2000ml of mix water PHβd 6.5
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15
Week 15. Flowering
5y ago
1/13
42 cm
Height
12 hrs
Light Schedule
27 Β°C
Day Air Temp
6.5
pH
55 %
Air Humidity
24 Β°C
Night Air Temp
15 liters
Pot Size
2 liters
Watering Volume
45 cm
Lamp Distance
Nutrients 3
Bio-Bloom
1.5 mll
Top-Max
1.5 mll
Magne-Cal +
0.5 mll
sompas Flowering day 38 dressing warm casting and bone meal on top of soil. Feed magne-cal+ 1ml/litre , top-max 1ml/litre on 2000ml of mixed water PH6.3
Flowering day 41 dressing bat guano top of soil feed top-max 1ml/litre , magne-cal+ 1ml/litre with 2000ml mixed water PH6.3
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16
Week 16. Flowering
5y ago
1/13
42 cm
Height
12 hrs
Light Schedule
27 Β°C
Day Air Temp
6.5
pH
55 %
Air Humidity
24 Β°C
Night Air Temp
15 liters
Pot Size
2 liters
Watering Volume
45 cm
Lamp Distance
Nutrients 3
Bio-Bloom
1.5 mll
Top-Max
1.5 mll
Magne-Cal +
0.5 mll
sompas Flowering day 43 feed bio-bloom 1ml/litre , top-max 1.5ml/litre , magne-cal+ 1ml/litre with 2000ml mixed water PH6.3
Flowering day 46 feed bio-bloom 2ml/liter , top-max 2ml/liter , magne-cal+ 1ml/liter with 2000ml mixed water PH6.5
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17
Week 17. Flowering
5y ago
1/8
42 cm
Height
12 hrs
Light Schedule
27 Β°C
Day Air Temp
6.5
pH
55 %
Air Humidity
24 Β°C
Night Air Temp
15 liters
Pot Size
2 liters
Watering Volume
45 cm
Lamp Distance
Nutrients 3
Bio-Bloom
1.5 mll
Top-Max
1.5 mll
Magne-Cal +
0.5 mll
sompas Flowering day 53 feed just water 1500ml PH6.4
Flowering day 56 feed bio-bloom 2ml/liter , top-max 2ml/liter , magne-xal+ 1ml/liter with 2000ml mixed water PH6.3
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18
Week 18. Flowering
5y ago
1/4
42 cm
Height
12 hrs
Light Schedule
27 Β°C
Day Air Temp
6.5
pH
55 %
Air Humidity
24 Β°C
Night Air Temp
15 liters
Pot Size
2 liters
Watering Volume
45 cm
Lamp Distance
Nutrients 2
Bio-Bloom
3 mll
Top-Max
3 mll
sompas Flowering day 59 feed bio-bloom 3ml/lite , top-max 3ml/lite with 2000ml mixed water PH6.4
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20
Week 20. Flowering
5y ago
1/7
42 cm
Height
12 hrs
Light Schedule
27 Β°C
Day Air Temp
6.5
pH
55 %
Air Humidity
24 Β°C
Night Air Temp
15 liters
Pot Size
2 liters
Watering Volume
45 cm
Lamp Distance
sompas Flowering day 72 feed only PH water 2000ml
Flowering day 76 feed only PH water 1.5lite
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21
Week 21. Flowering
5y ago
1/5
42 cm
Height
12 hrs
Light Schedule
27 Β°C
Day Air Temp
6.5
pH
55 %
Air Humidity
24 Β°C
Night Air Temp
15 liters
Pot Size
2 liters
Watering Volume
45 cm
Lamp Distance
sompas Flowering day 79 feed only PH6.3 water 2000ml . From trichomes checking. It looks like 1week left to chop.
Flowering day 81 feed water 2000ml