|
FOR |
AGAINST |
| Pond natural |
Economical, permanent, looks best |
May disappear with lowered water table in dry season. |
| plastic |
Moderately priced |
Vulnerable to mechanical puncture and UV degradation. |
| concrete |
Expensive |
May eventually crack and leak. |
| Butt plastic |
Cheap |
Eventually (depends on type) photodegrades. |
| wood |
Attractive |
Can shrink and leak if not full, |
| Tank steel |
Long life |
Unattractive, acid corrodes. |
| Ferro-cement |
Long life, versatile shape, home-made |
Requires some skill to make. |
| fibre-cement |
Long life, fairly cheap |
Example: cattle trough, not large |
| concrete |
Long life, strong, good underground |
Expensive, labourious if underground. |
