Gray tanks and 30amp hookup

[Rick and Mindy]

So, we just made a trip to Lake Dardenelle State Park in Arkansas where we spent 6 nights in a "no sewer" 30 amp/water site. Don't get me wrong, they have beautiful full hook up sites right on the lake but sincewe had not made reservations way in advance we would have had to move several times and we were meeting relatives in a motorhome and decided we would go with the site we were in. The weather was rather cool so we did use the heat pump several times and found that we could run the heat pump, microwave and an electric teapot and several halogen lights without tripping the 30 amp breaker. That was good news. Since we didn't have sewer decided to see how long we could make the 2 gray tanks last. I should tell you that we did use the aftermarket slide valve attached to the end of the Redwood sewer pipe. As others have stated, I opened both gray valves and left the end attached slide valve closed so we could utilize the full 90 gallons of gray water. We were conservative in our water usage but we each(2 of us) showered every day and dishes were also cleaned daily but we did keep the dishwater in a pan in the sink and used that water each evening to distinguish our campfires. We also used the bathroom vanity for teeth brushing and washing hands. I monitored the gray tanks every day to see how full they were. On the 6th day one of the tanks showed full and the other showed 2/3 full. Not knowing how full the second tank was for sure we decided to walk to the provided bathrooms to shower on the 6th day. We do not have a shutoff on our shower head so we could have actually gone longer than the 6 days if we had the shutoff. We had no problem with the setup or the added valve leaking so we were happy to know that we could go that long without dumping. No problems with the black tank and when we dumped it was only at 1/3 full.