DIY biological rainwater drinking water filter. This filter is made very easily, you need gravel, sand, and charcoal. This is a biological and mechanical filter, in the first month the water will be cleaned mechanically, later, when the microorganisms multiply, it will work biologically as well.

0:00 plan
0:29 biofilter gravel
1:07 biofilter base
1:35 barrel drilling
2:25 fitting the connections
5:02 connect inside the barrel
6:20 water flow
7:14 biofilter material
7:44 biofilter material installation 1
10:45 how to clean sand
11:58 biofilter material installation 2
13:46 water into the biofilter
14:39 bio filter leaking
15:00 lowering the pressure in the system
15:11 sealing the cover
15:43 seal test again
16:12 how to clean water
17:13 external filter
18:51 explanation of the biofilter



Related video:
CHARCOAL -    • DIY charcoal for rainwater filter  
DRY FILTER -    • DIY Rainwater Filter  



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