Black hose solar water heater for shower only works great.

[lalaland]

I lived in a tent on this land for 5 months, and took "showers" from 3 garden hoses stretched out in the sun - the water stayed warm even after the sun went down for a bit - and it was plenty hot. These were just regular green or grey hoses, sometimes the water was hot enough to be uncomfortable!

sorry I can't help out with your other question!

 

[Silver Poni]

We are building a green house beside our house and I had thought that in the summer I could put a bathtub in there and fill with water every morning, let it set all day to get warm (probably hot) and then bathe at night. I would run a hose from the drain out into the pasture to get rid of the gray water and refill again the next morning. I don't think that would save me much money and I actually prefer a shower over a bath but it was a thought.

 

[Silver Poni]

Could we use the black water pipes made for sewer lines, you think? I wasn't sure if that would be safe or not.