When I was searching for boat inspection plates amazon example I saw a review where someone had bought one to install in the top of their RV fresh water tank to make cleaning inside easy. I thought it was a wonderful idea, so I bought an extra, but now that it is getting close to spring, I am having second thoughts about installing it.
A bit a quick details, fresh water tank is located under bed in tow behind camp trailer. The bed lifts to provide access to the tank and additional storage. The water tank is about 25 gallons, 12 inchs tall, and about 2 foot by 3 foot square. I drain it before winter storage, and run RV anti freeze through the entire system. The tank is semi transparent plastic. I general travel with a full tank of fresh water, unless I know there is potable water at my destination.
I was planning to cut a hole in the top of the tank, just like for an inspection port, this would allow me to reach in and scrub the inside of the tank, rinse it out, and flush the system with clean water.
The standard alternative is to fill the fresh water tank with bleach and water, drive around to try and slosh the water around, flush repeatedly, and sometimes use backing soda to get the bleach taste out of the water.
Being able to reach in and clean will make it quicker, easier, and probably more effective to clean the inside of the fresh water tank.
The inspection port is designed to keep water out, so I think there is some risk that sloshing water, or overfilling could force the inspection port cover off. As I would not realize until I stopped, meaning several gallons of water could be sloshing around outside of the tank and inside the camper/trailer.
Are there any examples of this working well or failing miserably? Are there known good solution to provide cleaning access inside of a fresh water tank?