1979 grey tank - still good?

[Pygmypoacher]

Just pulled rear subfloor in my '79 Sovereign Intl. My grey tank top sags a bit. Looks like water leakage sat on top for quite awhile. Does anyone know if the sagging is normal and ok or does it need to be replaced? The grey tank is on the left. Thanks in advance for your help.

[nickclifford]

have you considered a composting toilet ? Google that and you might be surprised at what you see.

https://www.youtube.com/watch?v=_E2xOoNov9s

I'm considering this setup for my '72 Landyacht.

[Pygmypoacher]

Originally Posted by nickclifford

have you considered a composting toilet ? Google that and you might be surprised at what you see.

I'm considering this setup for my '72 Landyacht.

Yep, I'm going to use a Nature's Head. But I still need a gray tank. If the grey is bad I could use the black for the grey but want to know if it's bad or not. Thanks

[nickclifford]

Originally Posted by Pygmypoacher

Yep, I'm going to use a Nature's Head. But I still need a gray tank. If the grey is bad I could use the black for the grey but want to know if it's bad or not. Thanks

Would love to know how that works out !

[JCWDCW]

The original tank would probably be polyethylene, and in Grey Water service probably not too deteriorated since there would be few harsh chemicals. If the Poly is still flexible and the inlets and outlet seem solid, then it is probably still serviceable. PE usually deteriorates in sun, not in the dark. Still it is 37 years old and the bigger question might be whether you want to open the floor again if it does develop a leak.
JCW

[Pygmypoacher]

Thanks JCW. Good points and helps to hear that its flexibility is normal.