Looking nice and healthy but looks like it needs a stronger feed. Will be increasing towards end of the week.
Since Thursday they've had 13ml of Alga Grow and 3ml of Sugar Royal added to 4 litres of water. Each have been fed around 0.5 litres and won't need feeding until Saturday at the earliest.
nice plants, little advice, your plants are suffering from Magnesium (Mg), you can try and use "English Salt" (MgSO4) and water with at least once, or just find any nutrient (mostly blooms, if its tripart nute, have high concentrate of Mg) and give bit higher amount of it
Good luck ✊✊