I've used maracle grow in flood and drain. Works OK. If for example it says on the label to put one teaspoon per gallon (for dirt), I would use one teaspoon per six gallons.
alright cool but that light settings ur talkin about seems way to much..i had it ona 14/10 before and i been hearing from pple that it can be 2 much light that is makin the plat leaves curl in so i put the gurls on a 8/16 so that it can relax with all that heat stress..