Well I have a wet/dry also, i keep my water level a little bit above the grate that holds my bio balls. Just a note, slowly removing the bioballs and adding live rubble, but been thinking of raising thre water level since i put a protein skimmer in the wet/dry, I get alot of micro bubbles pumped through the return. I would just make sure that you can't overflow the wet/dry if the power goes out. I reduced that amount of water going back to the wet/dry by drilling a small hole on the return outlet in my tank just below the waterline.
it's a free trip around the sun...enjoy the ride