DIY passive Solar SPA heater

[rin67630]

Here is an easy hack to add solar heating to an Intex SPA.
It does not need any pump, but just derives a part of the filter water stream into a loop of electrical corrugated conduit that runs through a greenhouse box.



And it works quite well:


The spa heats up twice as fast and can be heated when covered as well.

 

[rin67630]

By the way: this isn't the only hack.
With another piece of PVC pipe, two stainless steel scourers and some length of sprinkler hose i made an underwater vacuum-cleaner.
So you can aspire all the debris that gathers in the bottom of the spa into the scourer filter and clean the Jacuzzi at a breeze.


After cleaning rinse the scourers under water:

 

[rin67630]

...So you can aspire all the debris that gathers in the bottom of the spa into the scourer filter and clean the Jacuzzi at a breeze.
After cleaning rinse the scourers under water:

Cleaning the SPA underwater after a short stormy rain that accumulated quite a lot of debris into the scourer:

Rinse it under clear water and ready for the next cleaning. That stainless steel vacuum cleaner filter lasts forever!

By the way: regular Intex filters regain 75% of their filtering potential once washed in a dishwasher...
A pair of filters alternately regenerated in the dishwasher last more than a season.

 

[Frick]

Is your water running through galvanized conduit? if so, you may end up soaking in a metals enriched spa. Potential health hazards could exist.

 

[Bluedog225]

Cool.

Would you mind showing a little more detail (and photos) of that clear tubing arrangement? I’m not familiar with that stuff. Thanks

 

[rin67630]

Cool.

Would you mind showing a little more detail (and photos) of that clear tubing arrangement? I’m not familiar with that stuff. Thanks

what do you mind actually?
The underwater vaccuum cleaner or the solar heater?

 

[Bluedog225]

The solar water heater portion. Thanks

 

[Brunovandaele]

Also very interested in solar heater portion ! Thanks in advance !