I agree, if you feel you need to fertilize then you probably don't want that plant in the viv. my plants have been going in my Viv without frogs in there for a few weeks now and seem to be doing ok with just being misted by my mistking, my brom is also mounted up high on driftwood anyway. My pothos is sprouting new leaves, and my crypt is starting to color up. We'll see what happens in teh next couple weeks once the darts are in there.