Gorilla zkittlez

Happy with growth this week. Doubling size week on week not so much height growth but side branches are really shooting out. Done a little leaf tucking to help them out. Started some nuteriets this week biobizz fish mix, heaven and root juice all at half the recommended doseage. I keep getting PH fluctuations in the soil, sits at about 6.5 once watered/fed then goes up to about 7 as the soil dries out,tried PH’ing the solution to 6.0 and had the same result, not sure why this is but think it may be the reason some of the leaves are slightly off colour and dry at the tips. If anyone knows why this is or how to fix please let me know. Thanks for taking a 👀