fan leaves going yellow

this is my second grow now and having problems still with 2 maybe 3 of my plants. so i am growing super lemon haze from green house seeds.i have 33 days in budding so i don't know what to do please help. OK so 2 weeks ago gave them nutrients im using earth juice products i gave her 1 tsp bloom and 1 tsp micro soil ph was 6.8. then a week later flushed with plain tap water that sat for a couple days soil ph jumped to 7.3 i watered some more with tap water that had a ph of 5.1 and checked the run off was a 6.9. yesterday looked at plant leaves still not doing any better so i flushed the still wet soil again with 10L of ph 4.6 tap water run off was still a 6.9ph added a very very small amount of nutrients 1/8 tsp veg 1/4 of bloom 1/8 micro. my grow room. 400 watt hps 45 to 60% humidity lots of ventilation and fresh air temps are between 16 lights off and 25 degrees lights on don't know what else to tell u guys or girls don't have a ppm meter to check the ppms. any help would be greatly appreciated

if its yellowing from the bottom up, its nitrogen deficient, thats common during flowering becuase the bloom nutes usually lack N. otherwise it could be a lack of trace minerals (zinc, iron, sulfur, manganese...) but its still in the early stages. I say that cuz later stages show other signs (other than yellowing of the leaves).
Id do a fairly well balanced feeding of NPK, and lots of trace elements, (not alot of them, but a lot of variety). i usually get 3 or 4 dif brands of stuff and mix them at 1/4th-1/2 strength and feed it. for this id do 1/4 strength grow nutes, 1/2 strength bloom nutes... something like that. and give it time.
good luck

simply diagnosing a nutrient issue is not enough. we need to discover the causes of the issue. it is not always so simple that an N deficiency symtpom means we simply need to add more N. it could be that there is plenty of N but that the plant does not have access to it.

as it stands i think you've gone overboard with trying to sort this issue out. done too much and only caused more damage.

the plant looks almost done to me anyway... i'd just feed it plain water till the finish... the leaves don't matter as you don't smoke those anyway.