Depends on what nutrient line. I suggest having some bennies like Aqua Shield from Botanicare and/or Great White. Maybe some B1 Thrive Alive. PK Booster could be helpful if you so choose. Big Bud is what I use. It's not organic though. Nirvana is a fantastic product from AN and is in their organic line. Look for a silica supplement as well. They work wonders at helping you maintain a healthy plant.
if your using Iguana juice I would not worry about a pk booster. Unless it is organic like some soft rock phosphate to densen up your buds with Phos. Boost it with Worm casting teas like mentioned above. maybe some humic or fulvic acids to increase nutrient intake and possibly molasses for carbs, calcium, magnesium and potassium.
I know - old thread, I am doing Iguana Juice Grow right now with GH Black Diamond which is liquid humic acids, and Botanicare Raw sugar which is basically over priced molasses.
I used Iguana Juice last time too, got great quality with lower volume than the previous Floranova grow and bloom.