The top max is a 'flower enhancer' what ever that means...more molasses and probably aminos/enzymes etc to help flowering. I have burned my plants with the top max before so you should be careful with it. I don't use the fish mix as it is about equivalent to the Grow, but now I'm wondering if the fish mix gives more calcium? You really can't go wrong with just the basic grow/bloom combo but I've seen some nice stuff with just the fish mix so I don't know?
@swampman I can't wait for the cobra to take off. As 12 weeker I thought it would take a while to bulk up but I'm pretty impressed and they still have a ways to go!