Yes, I have timer, two times a day during the flowering stage. The first time is at dawn, the second time it pours up to 4 hours before lights off. I tried 8 times a day, no difference. It depends on size of pot, smaller pot should be watered more often. Drip irrigation isn’t reversible. Drainage is approximately 30% of the solution.
I can’t say anything about the formula, it's never bothered, but it is 7-5-13 NPK on the packing, you can see in the pictures. I always use prepared nutrients.
Now I give solution 1200-1300uS. After 2 days give 1400 uS, after 4 days 1500Us (1500uS will be till the end). I add only PK 13/14. The total EC doesn’t exceeds 2000uS.
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