Auto Northern Lights in coco/perl

Notes up til now - All is good although the only complaint I have is that the plant is a little too short and the stem is too thick (all of last week I had a fan blowing directly onto it since the stem felt a bit weak- rookie mistake) so it's hard to do any LST on her. Leaves look nice and green, she likes the nutes as well. I'll keep increasing EC and see how she takes it. My goal is to increase EC by 75-100 points/day. Fastbuds says that she likes higher EC so I'm hoping to push to approx. 1600ec. We'll see. Day 29 - 26*C (78.8F) and 57% RH. Since I didn't fertigate yesterday I gave her 1.5L @ 1088ec at 6pH (0.6Ca, 0.6Mg, 0.8Micro, 0.7Gro, 0.5Bloom, 1.5ml Humic (12% humic 3% fulvic), 1.5ml kelp (27% Ascophyllum nodosum). Got ~ 10% runoff @ 1045ec (previous feed was 2 days ago @ 1035ec so I'm loving this runoff measurement). Day 30 - 24.7*C (76.5F) & 64% RH. A couple of leaves got burnt by the nutes from yesterday, no biggie. Fertigated with 850ml @ 1046ec, 5.97pH. It's my first time using filtered & dechlorinated water (instead of RO) which comes out @ 300ec. (to make 1L I used 0.6Micro, 0.9Gro, 0.4Bloom). The problem with LST is that the side branches are not long enough for them to get the light they need but the stem is too sturdy to bend it more. Inter-nodal spacing is very short as well which makes it hard to train. I might defoliate a few leaves soon to let the light penetrate into lower canopy. Since it's my first grow I'm kind of skeptical about defoliating but it might be beneficial looking at the plant now. Day 31 - 26.2*C (79F) & 69% RH. New growth leaves have yellowing on their tips (likely nute burn since I increased dosages of Tri-Part quite a bit). No water/feed today to see how the plant reacts. Day 32 - 25.6*C (78F) & 70% RH. Plant looks happy, I applied another tie to the top of the stem and pulled it down to increase light penetration to lower canopy. I decided not to defoliate yet so I did some leaf tucking instead. I might have to lower the feed doses because of the yellowing of the tips. I'm thinking she's capped out @1100ec in veg. Fed 1.1L @ 1120ec, 5.66pH (still stronger feed schedule to see how she reacts) consisting of: Filtered & RO water + 0.2Ca + 0.2Mg (536ec) + 0.6Micro + 0.9Gro + 0.3Bloom (that's 1/2 strength of GHE recommendation). Got 0% runoff so I added another 700ml mid-day that came out @ 1119ec, 5.8pH. Got 20% runoff @ 1062ec. Lower runoff ec in comparison to feed ec makes me think that she's taking up all the nutes and I should increase the doses even further - maybe the "burnt" tips are from raising EC from tri-part too much in a single dose. Day 33 - 24.9*C (77F), 72% RH. No feed & plant looks happy. Day 34 - 26*C (79F), 72% RH. Applied a few more ties to spread the plant out. Fed 1.5L @ 1059ec, 5.83pH. Got 13% runoff (200ml) @ 942ec - I will up the feed next time.