Black water reconfiguring

[RJ]

. . . but a round drum in a square bay wastes a LOT of space. 

To follow up on what Bruce just pointed out, a rectangular tank the same height & width as a standard 55-gallon drum (35" x 24") yields 87.5 gallons, or just about 40% more capacity than the idea you're considering.  [(L x W x H)/7.5 = US gallons]

Here's an idea several busnuts have used in the past if you want to use two: stacking the grey tank on top of the black tank. Set up the grey to drain directly or into the black for better flushing of "stuff" when it's time. 

IMHO, go for at least 100 gallons of grey/black capacity.  Besides extending your boondocking time, the larger the capacity, the better the drainage.  Lots of info on the stick 'n staple RV forums about NOT having enough water in the black tank and it's associated problems.

FWIW & HTH. . .

[Oonrahnjay]

To follow up on what Bruce just pointed out, a rectangular tank the same height & width as a standard 55-gallon drum (35" x 24") yields 87.5 gallons, or just about 40% more capacity than the idea you're considering.  [(L x W x H)/7.5 = US gallons] ... 

       And say you want (and can) use half the width of the bus as capacity.  A tank that's 48" long (and also 24 x 24") would give you 120 gallons -- or double the size of a 55-gallon drum.  I'm kinda crazy about using all the volume I have for things because I have so little to work with.  Yeah, a drum is cheap but it costs in terms of efficiency.

[Oonrahnjay]

   This is clumsy software ...

[wal1809]

Funds will now dictate what I do.  We are in a financial "Batten down the hatches" situation for the time being.  I am and have always been a firm believer in pushing to the edge.  We just closed on a house on the water in Port Conner, Texas.  I knew the money was going to be fast but I didn't figure in just a poof.  As of yesterday an additional $7000 just went out the pocket in a flash.  We will get through this and we shall recover.  As of today, I can't go purchase a $400 black tank.  I appreciate the discussion I really do.  Things just changed in a big way in a big hurry for us.

[digesterman]

You got to do what you got to do, anyone that hasn't been there hasn't experienced 'the real world'.

[Oonrahnjay]

You got to do what you got to do, anyone that hasn't been there hasn't experienced 'the real world'. 

     That's true.  And you can always use a drum for, say, a couple of years -- even if you have to live with "limitations" -- and go back when things are better and put in a bigger tank.  You can probably re-use the same valves, etc.   Was it Pogo the Possum that said "it's life - ain't nothin permanent!"?