??Bleach/tone vs 40vol 1:2

I tried putting highlights and low lights into my girlfriends hair yesterday using advise from this website, but things didnt work out so well.

 

Her hair is a bit of a disaster to start with and now we are trying to prolem solve in order to fix it tomorrow.

 

She has about a level 5/6 hair naturally, and has about 4" roots coming through. There are a lot of highlights growing out, and unfortuatley she has iron stains over the lower protion of her hair from bad water at her house.

 

What we tried: A few days before we used a clarrifying treatment and manged to remove some of the iron build up, then when we coloured we used Ion Very light blonde 9N-9.0 with volume 30 developer mixed 1:1 and Ion Light golden brown 5g-5.3 with volume 20 developer also mixed 1:1 to give a little contrast over the previously coloured ends.

 

We were thinking about using the same colours again, but for the highlights using a bleach formula for the roots and the very light blonde to tone down the "bleach" colour, and the golden brown with a stronger developer to allow it to get more colour on the hair.

 

Any suggestions and opinions would be greatly appreciated since I am an ammature and am just going off research online.

 

Thank you so much for you help.

 

The end of her hair are very porous so im a little hesitant to use bleach on the ends, but the 30 vol developer mixed 1:1 didnt lighten anywhere near as much as what we are wanting.

 

Thanks again:) Kate