In my opinion, I don't really think a 110 watt is literally "blasting" on a 29 gallon. Sorry if that is too much of a different opinion, but my reasoning is this. I have a 20 gallon long. Lot less shorter than your 29 gallon (my assumption). I have 130 watts "BuRNING" on that tank and the tank is doing well. For me lowlight plants will grow much faster in a high light tank as long as a good level of co2 is involved. Don't be afraid...just go ahead and test things out. Constant water changes, good water flow and you should be fine. you might have to fight a war, but the outcome is always for the best. Good luck and let us know how things turn out.
My friend always says I'm crazy like amano for doing 6 watts or more per gallon.