Then the cement is poured on top of the mold, which already has the PVC pipe installed, and is dried.
Once it is dry, just pour sand and gravel on top and it is basically done with the addition of a diffusion plate and developing the biolayer.
Sunday, July 19, 2009
Day 15: Building Filters Part II
Cement is the first ingredient.
Then the cement is poured on top of the mold, which already has the PVC pipe installed, and is dried.
Once it is dry, just pour sand and gravel on top and it is basically done with the addition of a diffusion plate and developing the biolayer.
Then the cement is poured on top of the mold, which already has the PVC pipe installed, and is dried.Once it is dry, just pour sand and gravel on top and it is basically done with the addition of a diffusion plate and developing the biolayer.
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