cant stop the yellow!!!!!!!!

hi
my plant leafs wont stop yellowing.
shes 6.5 weeks old, soil, 400w hps 30% humidity, ph 6.5, water evry 4 days add nuts evry 2 watering, bio bizz bloom 2ml and bio bizz alg-m-mic 1 ml
shes medical strain, dont know which but i know she has 8 weeks life cycle
she started yellowing after 3 weeks, thought its n def so i add bio bizz grow 1ml to the nuts cycle
but still she goes yellow in a few days she wont get green leafs at allb
eside the yellowing the buds are doing fine
could it b the strain type or shes having a lack of something?

thnks for the answer

the plant is in flower and using / needing alot of nutrients. bio grow or bloom should be added at 3-4 ml per litre.

No its not the strain its the grower. This will affect the hardness ,weight and quality of the buds. The ph of your feeds and waterings are not 6.5 ,get another meter or calibrate that one, either that or the temps are too hot.

One more thing, is the amount of bio bizz your mixing as per instructions? make sure its full str every watering at 6.5.

u should feed more often if not full using full strength nutes. if u are 6.5 weeks into flower then u have longer than 10 days finish and should go till week 10 or so checking tric daily. ur plant is under performing at this point cuz u have starved it. u should just now start to see yellowing leaves as ur plant ripens however its had a N deficiency during the most critical part of the flowering cycle which keeps it from bulking up like u want it too. live and learn bud.