Fast Buds Testers FF 3 - Sativa/Indica

The structure of the plant is still a bit concerning. There is little to no node spacing despite trying to place the lights up to get some stretch. It looks healthy aside from that but it is very reminiscent of the GG from last grow that had a very similar structure and which I believed to have a boron deficiency due to using RO water. It was not clear to me that it would become an issue until 2 weeks into flower when its structure had not changed at all (see grow diary here https://growdiaries.com/diaries/30647-real-gorill4-2nd-attempt). Plant was watered on 1/3/20 as well as fed with 3 tsp Big Bloom and 1 tsp Grow Big per gallon. Runoff is quite high, sitting around 8 however plant is showing no signs of lockout. Plant was watered again with water pH'd to 6.1 on 1/7/20 in an attempt to lower the runoff however, the runoff was still at 8. I am unsure if this is because the lime was added as an afterthought and it takes time to seep in and take effectiveness. Plant was topped on the 5th node on 1/4/20 and an LST ring was placed on 1/7/20. LST began on 1/7/20. I will continue to water with pH 6.0 and will possibly flush depending on if I see any runoff improvement. The plan for the upcoming week is to defoliate in preparation for the flip to flower at the end of week 5. Veg has gone on a bit longer than I expected but for no reason other than I have not yet hung the HPS.