R23 waste tank

[EdHat]

Would like to increase the size of this tank 11gal will just barely work for a weekend. Was thinking of adding a tank in the center rear hatch ( where the generator would be if I had one). Maybe 15 or 20 gal. I was going to add a Y valve on the out valve for the macerator pump. When the main tank is full you would pump it to the rear you. Separate pump out and vent. Any suggestions

 

[caljepat]

Maybe pee overboard more or move to Canada?

 

[scross]

Our black water tank is 30 gallons and we can only get 9 nights away from a pump out station on it. It can be a serious limitation for longer duration cruises. I can’t imagine what we would need to do with an 11 gallon tank!
A completely different solution from adding a second tank would be to replace the existing marine toilet with a composting toilet. A lot of RT owners have done that and are happy with the results. Search on composting toilet for the many threads on that subject. Natures Head and Air Head seem to be the two favorite brands.
Good luck!

 

[forfun1960]

We have a R-23 and in a previous post DragonFly posted the following and it works like a charm. We get up to 7 days doing the following:

Our 2018 R-23 does not have a holding tank gauge/monitor so here’s what we do. We only use Fresh water to flush. We DO NOT use raw water. We keep a gallon jug filled with fresh water by the head and measure the amount of water we use with each use. It’s not perfect but it gives us an idea of when we’ve put about 10 gallons into the holding tank so we know it’s time to empty. Plus by using fresh water instead of raw water we significantly decrease any odor from the raw water line. It works just fine.

 

[Brian B]

About 5 years ago I installed a waste tank monitor in our 25SC. It is pretty accurate and has worked well. Here’s the link https://tankedge.com/products.html I installed the mini model.
The composting toilets are quite large so take their size into consideration on a smaller boat.