Readings are still the same. Yea I have the lights on about 10 hours a day, I will cut back on that. Im working with my employer to get our office setup for RO delivery that will come out of my check. They come once every 2 weeks, so I was going to have them drop 10 gallons each time. Do a 5 gallon change each week, sound like a good plan. I dont really want to do an RO unit, as there is really no place to put it, nor anywhere to route the waist water.