First Grow / Plant #2 / Mystery Strain

Hey Friends, end of week 11 from seed ☺️ Not much has changed this week in the growth of plant #2. I noticed some orange on the leaf tips. This can be due to overfeeding nutrients or because I recently ran into a problem with my Ph meter, it broke so I had to purchase one at a local Hydroponics store, different model so it was giving me different readings. For example, after adding nutrients to the water, ph would read 4.5 - 5.0, with the old ph meter I would add 10 drops of ph up and it would rise to 6.0 - 6.2, with the new ph meter it goes down to 4.2 when adding nutrients and I need around 20-30 drops to bring the ph up to 6.0 +. The old ph meter was less expensive I purchased it for $15, and the new ph meter cost me about $60. I guess the new one gives me the correct reading. The plant was used to the old feeding dosage now it just needs to adapt to the new feeding. Noticed some of the top leaves had curls so I lowered light intensity. An increase in red stems so ill keep lowering the light to avoid too much strees Colas are growing in width Smell is slowly getting stronger, not sure what strain it could be but it looks and smells like cookies and og. No amber trichomes yet, maybe there is some already but its not very noticeable yet QUESTIONS How long before flushing?