Contaminated Soil, off PH fuck!!

hey everyone

so recently my buddy lost a plant unknown problem...
one left.... went to switch soils and put in a bigger container and he was ignorant and bought potting soil with ferts...unfortunately it came contaminated with little bugs im sure aphids and spider mites. Do brown round bumps on the bottom stem indicate eggs? or is this normal marijuana growth? ALso the ph was about 5.5 so he flushed and efter some "praying" and "burnt tip" leaves (the inner growth has gotten real bad) he got dolomite lime...foiler fed....flushed the soil then added a lil dolomite lime watered down mixture to the newly flushed soil.. Now.. he is going tommorow to get fox farm.. and stop dealing with his problems. tHE PH PROBLEM should be the burnt tips and praying tips correct? Also Safer "vegetable and fruit" spray was purchased to control the bugs... its all natural. Please any sugguestion so he dosnt loose this one! i was hoping to smoke a lil of this hopefully but after these 2 plants and 1 left looking in rough condition he is persistant to succeed. Lots of research has been preformed and in many ways it can get confusing. Thanks so much for your help

dude come on!

I don't know man. Sorry. Can't really think of anything. Buy better soil I guess. Fox farm has good soil.

Dude, you're killing her with too much stuff! Let her grow on her own.

Do you think good pot would be so expensive if it was easy to grow?

ok dont foliar feed with lime.....baaaaaad idea, second if the plant has just been put in the pot you can take it out and shake off most of the bad soil then put it in good stuff, oh and the little bumps on the bottom of the stalk are normal, if you were to put another inch of soil around the plant you would see roots growing from them, so dont jump to conclusions about bugs, spider mites dont live in the soil so easy on the sprays, if there are bugs in the soil you can put diamotocious earth on top of the soil around the plant and that will kill any bug that tries to walk across it, the stuff is like small razor blades that slice open the bugs as they go across, so when you get the fox farm soil put a few spoon fulls of extra dolomite lime in the pot and then only use plain water for the first few weeks at least, i would also spray the plant down with distilled water as this willl help break down all the nute burn you have going on, the leaves that are crispy are gone for good but the ones that still have some green and are not all dried up may come back, so next time do a little research before you go spraying shit on the plants, if you go wild you can fuck the thing up bad