3 weeks flowering. need help with nutes.

Hey you guys, I have a question about nutes.
I gave my plants all purpose miricle grow during veg. state(24-8-16).
My plants have been in the flowering stage for about three weeks now and I was wondering what kind of nutes I should give the plants(Is it too late?). All I have been doing is giving them home made co2 during the flowering stage(sugar &yeast)(I gave it miricle grow once during flowering also)
And I think I should give it a little something more to help.
I'm pretty new to growing and am not sure what kind and how much I should give. Everyone tells me its not good to over do it on nutes. Just wondering if you guys have some pointers or guide lines to help.Thanks.

hey mike..

it is HORRIBLE to obver fertilize.. diluting is SMART.. and keeping a journal is smart.. so that after each grow, you can increase you nutrient regiment...

you want to feed the plants as much as possible without burning them..

How is the color? Are the plants DRAK green? The classic sign of over fertilizing is BROWN tips at the ends of the leaves... from there it only goes down hill.. yikes

pictures?

cheers