Feeding my plant?

Hey guys im quite new to growing as I used to just be able to go out and buy it, decided i'd try something new but in the other post i had up under problems it was quite clear i am having problems with my feeding schedule, some problems are red stems and curling leaves at the top, yellowing leaves at the bottem with brown burn tips and marks on the leaves, i am using 2 fertilizers, 6-6-6 Fish based all purpose plant food and 20-20-20 miracle grow all purpose, i water with every other once every 2 weeks. I think im very far off on the right schedule and any suggestions is very greatly appricated

Sounds like nutrient burn (too much). A common beginner mistake. Got any pictures? Perhaps a post in the problem area would be in order.

i have the pictures on my problem post, look for yellowing in leaves or help me please by haro bmx 420