trying to zero in on proper nutrient intake. PPM is 400 - 100 from base water PPM. will increase that slowly until comfortable... this is where i usually struggle to get things right, but a friend gave me a strawberry cheesecake auto thats in coco soil so its really opened my eyes to how touchy plants can be to nutes.
Might be worth sticking them on a 24/0 light schedule if your budget can’t stretch for a heater during lights out mate, 60f is really going to slow growth... I usually do 18/6, but if I had heat issues, I’d do as above 👍