"Phyllis and Jim Hurley" wrote in message
.. .
We have cement and EDPM. We have had rigid plastic in the form of kiddie
pools. The edpm and cement are more durable. The plastic is specially
vulnerable if you are making any ports in it. EDPM is easy to patch, as
is
rigid. Settling is no problem for edpm. It is a potential problem for
rigid. Is there a reson you would choose rigid over flexible? Above
ground? Ease of installation? ?
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*Note: There are TWO "Koi-Lo's" on this NG*

We looked into both back in 1995 and chose EDPM 60mil from Tetra. We never
regretted that decision. It's 11 yrs old and still in excellent condition.
--
Koi-Lo....
Frugal ponding since 1995.
Aquariums since 1952.
My Pond & Aquarium Pages:
http://tinyurl.com/9do58
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