I get a barrel of plain water, let it sit for 24 hours. Mix in a handful of bat guana and maerl. Then I add Grow, Bloom,Top Max, Alga Mic and a drop of Root Juice, mix it all up and let it "fester" for a couple of days, stirring from time to time.
End result is a scum covered, foul smelling, fermenting mixture . The girls sure do love it.
Haven't quite worked out the combined on it yet though
I like to to think of it as a "well balanced diet".