Pond Overlay shining though - will it get better?

On Thu, 31 Aug 2006 18:57:14 -0500, Köi-Lö $##$$@$##$$.#$$ wrote:


"Davy" wrote in message
...
Just installed a new wildlife pond. The water table is a bit high here so
I
weighted the liner down with some stone; and to protect the butyl liner I
put some underliner (overliner?) down on it first.
Filled it for the first time today and the pure white overliner shows very
distinctly. The pond is 5m by 6m and about 50cm deep.

Is it likely to improve?
=====================
Are you talking about the edge of the underliner showing beyond the black
liner itself? If so fold it down and hold it in place with a rock necklace.
That will also hide the edge of the black liner and look more natural.

Ehhh, I am not sure that the OP has the underliner under the liner or
on top of it.

She said that she wanted to hold it down with rocks but wanted to
protect it from them.

Which is it, white underliner on top or below the black?

John

Meaning no offence but weighing a liner down is a poor fix and in
extreme cases can tear the liner. You would be better served by filling
the pond so that the water level within the liner is above the
ground-water/water-table or as a not so good alternative set up
permanent drainage to lower the water table.
If you liner is bulging inwards because of the water table etc
(ballooning) it means that the water table is to all intents and
purposes level with the pond water, as the water table rises the liner
crushes to keep the pond level with the water table. If the rocks
prevent sections of the liner from crushing and cause taut sections in
the liner the forces and tension in the liner can become large.
For this reason all my ponds are slightly raised with the water level
in each pond ABOVE the surrounding ground. There is no way, barring a
surface flood, that the water table can rise to be level with the pond
and my liners are always pushed out against the soil.




--
sean mckinney