Strawberry Cough (Biobizz Organic Soil)

WEEK 8 - 26/1/2022 - 1/2/2022 27/1/2022 - The older and new leaves are showing interveinal chlorosis. I suspect its because of magnesium deficiency as I have been maintaining the pH at 6.2 to 6.3 as recommended by Biobizz. Its on the low side for mag absorption. Also I have been giving only 0.5 ml/L of cal mag with every feeding. So it could be due to underfeeding as well. For tomorrow's feeding, I'll raise the cal mag to 1.5ml/L and increase the pH to 6.5. 28/1/2022 - 15 litres of water mixed with the following: Cal Mag - 1.5ml/L - 23ml Fish Mix - 1ml/L - 15ml Bioheaven - 2ml/L - 30ml Acti-Vera - 2ml/L - 30ml pH - 6.5 EC - 0.80 36 hours of darkness starts at 00.00 (29/1/2022) and ends on 12.00 (30/1/2022) then followed by 12/12 flip. Finally!🙂 30/1/2022 - Day 1 of flowering! The girls have grown quite a bit but they are showing leaf tips bending down and slight tip burn. Could be nitrogen toxicity. I should omit fish mix on the next watering. 31/1/2022 - I decided to only add cal mag and Alg A mic hoping it could help with the nitrogen toxicity. 5 gal (19L) of water mixed with the following: Cal Mag - 1ml/L - 19ml Alg A Mic - 1ml/L - 19ml pH - 6.38 EC - 0.22 Minor defoliation done.