Fac33
Member
ill try that then, give it a miss for a couple of days and see.They are dry on top because they are under 1200w of HPS and the cab is warm, the top of the Coco will dry naturally in a day.
There's no way they need watering daily in 18L airpots, especially at that size. If you keep topping them up then the air/water ratio in the Coco is crap affecting your growth rate and yield (regardless of what you think, no offence).
Try drying them out between waterings. Let them wilt a little then water, if it takes say 6 days for them to wilt then you know they need to be watered every 4-5 days.
Sticking your finger in the pot to judge watering is a load of bollocks because the roots are still piss wet through. it's obvious the top of any medium will dry out but the roots are not at the top are they?
Water when your plants need it, not when you THINK they need it.
but i will say my temps are well under control, as ive gone overkill with the ventilation too!