Advice on Dying Plant (Pics) and Soil Mix Please

Two identical plants (silver haze), one very healthy and one dying quickly. The only difference between the two is that I added 2x as much blood/bone meal to the healthy plants soil mix compared to the dying one.

First thought to be over-watering (so waited 1.5 weeks till top 3in soil was dry then watered with light veg. nutes, epsom salt, humic acid, H2O2, and some white vinegar to lower the ph to 6.0). Now the lower leaves are rapidly turning yellow (pale green), and wilting is getting more severe.

I have my thoughts: 1) Started seedling in too big of pot with 2:1 soil to verm/perl. therefore roots aren't absorbing enough water and moisture is being held in the vermiculite and perlite, hence "over-watering".
2) The "healthy" one is male (even though it was a guaranteed feminized), that's why hes outliving the female weak plant

The weird thing is when i grew these same seeds in MG moisture control soil a couple months ago they veg'd very quick and produced excellent buds.

Assuming my soil mix is the problem, could someone steer me in the correct direction for next time I mix my own soil (see below). Yes I gave my plants names.

you named them.......just askin' for trouble i name mine OK1a, SC2a............

MrGhettoGrower said:

You kown what they have these dirts or soils that are ready you just buy'em and put it in the pot~

Click to expand...

Really?

Half my enjoyment in growing is messing around with different soils and nutrients to see the different outcomes; other half is smoking. With this being said, if anyone has any advice on my current soil mix please let me know.

I think u have sulfur def but due to ph imbalance that mix I r using is not ph balanced mix no dominat lime this would fix it in balance lettn plants access the mutes they need at al times also h202 5 ml gal should be used soil or soilless benifits outway having less than 1% of ur organic material to be used in production of o2 that would prevent that wilt due to overwatering also raises plants growth rates as now it can process food at much faster rates mix Dom lime in water or top of pot n water in say 30 ml per pot to start n go from there ANYONE who uses Dom lime might give better doses but this isn't to low that benifits will be seen in few days