New/Used Pod Owner Lots of questions?

Going back to the O/P. and monitoring tanks, I find the hardest one to be the grey tank. The fresh water, which i mostly use only as a source of flushing water for the toilet while in transit to a destination, is easy enough to bend down and take a look underneath. The black tank i use a guesstimation that i find close enough. I guesstimate 1 person ouputs 5 gallons of waste water per week into the black tank. Your actual mileage may vary, but I find this somewhat reliable. I don't know if anyone could share a method they came up with to manually monitor the grey tank. I have found a huge difference if you don't use the sink very much. I set up a 7 1/2 gal water can on a picnic table, and a 5 gallon pail under it, and use that as my sink for most things. I wash all heavy soiled dishes first with "wet ones" wipeys, then run them through a wash/rinse from the can. I add soap to the water can when I fill it, so it's ready for hand washing, or dish washing. Its usually nice and warm from being in the sun. My wife will normally rinse things in the pod sink with a dish pan to catch the water. I have found I can usually go a week without filling the grey tank even with a few showers each, and sponge baths in between. There are only two of us, so we can easily track our usage. I stayed at site for 8 nights last year and I brought the caddy, thinking I'll probably need a grey tank dump, but ended up not using it. We were at the beach and mostly used the outside shower to rinse when returning from the beach. That might have made it easier on the grey tank also. 

Originally posted by Motor7 Form the 'net to clean the Black tank sensors: "After you dump pour 1 cup of Calgon and 1 cup detergent into the tanks. Leave them in until your next dump. Before driving some RVers will also throw a bag of ice-cubes down the tank to “scour” their walls (we've never done this, but others swear by it)."

Black only, the ice is supposed to rub against the sensors and swipe the crud away as you drive down the road. I have never tried it......