Use Charcol filter done wth ...
Published by raymond dalaise
Use Charcol filter done wth Burned wood & crush an too differents diameters of sands, all that with gravity, IF POSSIBLE PUT IN INOX PIPE UVB, LED Tube of 100 Cm 150-340 Nanometers ondes with water circulation inside for complete circulation but at beginning U(ve tomake a pond for mud first deposit then to join in anther one Yogurt for probiotic treatment an too microAlgae for Nitrates treatment. This water could be completely pure, not expansive if U're a little cleaver (200 Euros total) an solar electricity include for the UVB leds. With this purifiezd water U can farm too fishes and shrimps for people feeding.
If U need more infos, contact me ray.dalaiseMohummadrashid@gmail Siddiqui