need help with Bio Bizz All-Mix Soil

Hi im useing bio bizz all-mix soil,the trouble i seem to be having is when i water it the run off come back at 7.3 7.3, iv try lowing my water PH down to 5.8 to see if would work but still come out at 7.1,and my white widows seem to be, not enjoy it making them a bit yellowing on the leaves,iv not long feed them and iv made a tea to start her of with Alfalfa and EWC,seaweed and other goodies she need for roots,but like i say the PH still come back at (7.1)( 7.2)( 7.3) and iv test the soil and it seem it around the 7 mark, so im at, abit of a lost end,im hope that they well pick up and the soil well go down in time,iv now water again with just plane water,still come back the same 7.2
here what in the soil,
Bio-Bizz All-Mix is unlike anything you would find in a garden centre. It contains an effective blend of soil (20%), compost (35%), worm castings (10%) and Perlite (30%) as well as a special 'pre-mix' (5%) of biologically active organic ingredients that have been fermented for a month to create a potent mixture. We recommend using Bio-Bizz All-Mix during growth and flowering, ideally in conjunction with Bio-Bizz Nutrients for best results.
thanks for you time reading but any one got any good tips would help me.
thanks
seeking

Seems you are doing a bunch of watering......that could be your yellowing prob....

its not form over watering, it was dry when i water them not over dry,i use my finger test and it need a drink,today they seem to be looking not to bad i need get some pictures up so you can see wat going on here,

here some picture of me plants,so far they had one feed,

hi,
i also use the same soil and nutes you are using, what size pots, watering regime nute mixture are you using?
i use 15 ltr pots and have never had run off water, if you are running through at 7.1 what the problem ? i think you would only drop down to 6ish in hydro,
i would stop ph ing the water and try a few days with less water.
in veg i use 500ml water a day, in flower i up to 750 -1L a day,

Hi Azam,
at the mo im not sure what nutes im going to use for my feed regime iv got the canna bio product or i could use the bio grow and bloom,for my fist feed i use Alfalfa and EWC,seaweed,Molasses,and i thought for my next feed i would add bio nutes,so at the mo they are start to look abit better so im just watering them till i see it get mo greener,then i well start my nute again,Im not sure of pot size but they was the big one they had in shop i would think about 15Lts,well i do wait till the soil nice and dry not to dry and then i water them,and then i water them till i get a run off, so you just using tap water only,And not PH it down,and you only used water in veg no nutes,and water it 500ml a day,i no the soil got nutes in it,as it should give you about 3 weeks in veg maybe my tea was to much,well me plants are three weeks old now,but thanks for the info

good luck bro,
i use only bio-grow,bloom,topmax and molasses.
my first grow using just these nutes yielded 18oz dry for me and was a awesome smoke. start on the bio-grow at 1ml to 500ml water then in a week or so up it to 2ml for 500ml, hope you get on track. also for watering i just use tap water only left to stand a day to let chlorine depleat, my tap water is 7.1 and my plants love it. soil is a lot more forgiving t han hydro as in it can buffer to certain extent.

sound good ok i mite try that are you using just tap water and not ph it down,then just add the nutes to it and feeding them one a week

i feed on a daily basis, just tap water stood for 24 hours.

ok cool im with you now im going to give a coulp of days,as iv only just water it, then i add feed as you did,and i try tap water on its own with the nuts,no ph just wonder why every one say have it at 6.5.7 when feed them to stop the lock out in the nutes