Soil change, shock?

OK, I have a few plants I started in cups and transplanted to half gallon pots at 2 weeks, now they are a lil over 4 weeks, I am using miracle grow with time released ferts so I think they have cause me some problems, I am about to start flowering and am gonna transplant them to 3 gallon bags, my question do I have to transplant them to the mg soil to not suffer any shock that could occur?? I want to transplant them to Foxfarm soil but I am worried my plants will suffer?? Any feedback? Also should I flush it before flowering? With these time released ferts or whatever, should I add any bloom fert?

Good luck growing out there!

you can go into Fox Farms. i did the same thing last year. they were more than pleased.

Thanks a lot for the reply ^_^. So should I flush them before I transplant to try to get rid of any of the ferts?? Also when should I start using bloom ferts? Thanks for any replies fellas.

when your repotting just make sure you water first, then transplant, then water again when transplanted this reduces stress and the plant recovers quicker. no flushing before flowering although you may need to go easy on the bloom nutes (watch for nute burn)