Yes, that will work just fine.
Remember with any type of medication, it will seep into the rock and leech out later. That is why most people do not put rock in the tank. Just some pvc or other plastic items to let the fish hide.
Also remember that some medications affect the biological filter. Read the label 
I'm sure you already knew this, you just wanted somebody's reassurance..
Jim
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90 Gallon glass, 135#'s of rock and 2" sand. 2-250w 20k XM metal halides. 2-95 watt actinic VHO, 4 powerheads, Coralife skimmer. Maroon Gold Striped Clown, Blue Chromis, Kole Tang, Pygmy Angel, Serpent Star, Brittle Star,Gorgonians, Mushrooms, Yellow Polyps, Turbo Snails & Blue Legged Hermits. 20 gal sump with Caulerpa, Mag 7 return pump. |