My wife told me I can set aside 200 bucks for fishtank equipment :beer: The tank is allready set up but I only used tap water. At this point I have every form of algae imaginable in there along with a snail clean up crew, a clown fish, two emerald crabs and some live rock. its been running for around 3 months. I have a cannister filter with nothing but carbon inside and t5 lighting. I am truly on a tight budget and all this is more of an experiment so I have to do the best I can with what I have. Its 36 gallons. I wanted to get a RO/DI system. I was looking at the Mighty Might because I rent and I dont know much about plumbming. Any suggestions on another system that might be worth it or any experiences you have have with the mighty might. I read that it makes 50 gpd does that mean I have to leave the water running the entire day untill I have my 50 gallons. How much of that water would become waste water? does having this unit significantly increase your water bill?