some sort of cake

The switch should be the week(s) flowering have a peak. Seeing how your plant look like actually i would say use PK week 10 and 11 and switch back to buddy for the few last flowering week(s). Your plant will prolly need more than 8 week of flowering that the vitalink schedule show, decal feeding accordingly as your plant will prolly need more something like 10 -11 weeks of flowering i would say. Happy growing.

You're doing a magnificent job with this grow! I'd say you've got about 3-4 more weeks of flower and you want to start using the PK at peak - which would be now - so yes, your intuition is spot on. Good luck with the grow from here on out - will be exciting to see your harvest!

Hey there Stashio, basically you have magnesium deficiency . Looks like you're not using dedicated calmag, but really you should, you cant really replace it with silica . Just try adding magnesium if you can , usually if you do this the problem should stop spreading immediately and the plant will recover quite quickly. Hope this helps ! 🚀

Hey Stashio, Did you put your lamps higher a few days/ one week ago? When you do that, your buds will stretch and make fox tails. But in other cases, its just genetics. Another thing, when you have high temperatures your buds like to stretch and getting fluffy as well, if you want compact buds, lower your temperature a bit. 27 degrees is just fine but you can do 24-25 as well. Good luck growing :)