Agrocannanswered grow question 4 years ago Hello,
Normally, the yellow tips indicates that there are too much salt in a soil (in case you are growing in soil). Check the PH of your drain (run-out) water - it shouldn't be below 5.5. (Ideal is 6-7)
Based on you results, if the PH is low, and EC is much higher (20% higher) then your fertilized solution, I would suggest to make some flash to your soil in order to remove salt from.
In addition, probably you should water her more or more frequent- but you drainage system should work properly!!!
Normally this phenomenon is not critical if the situation does not become worse.