A few questions..

How long has it been in the 3 gallon pot?

The PH you listed. Is that the PH of the solution you mixed or of the runoff that comes out the bottom of the pot?

Your source water PH is extremely high.. 8? What is the ppm of your water, is it well water or city water?

How many gallons did you flush with? for a 3 gallon pot you need 9 gallons minimum; also you flushed at the wrong PH. You wanted to flush between 6.3 and 6.8. 7.0 is a bad ph for soil.. or really for growing cannabis in any medium.
daihashi Reviewed by daihashi on . Help! 26th day of flower, yellow tips on top leaves This is a purple wreck, she is 26 days in flower and is starting to get yellow on the tips of the top leaves. There are also some leaves around the buds that are folding under and kind of bending down from the middle(see pics). E-indoor or outdoor indoor E-soil, soilless, coco, aero, or hydroponic soil CSL-Soil type/brand FFOF SCL-Anything you have added to the soil 1/3 perlite SCLR-Soil or slab runoff pH 6.5 E-Water source Tap Water E-Source water pH 8 E-Age of plant 9 weeks Rating: 5