On 24/07/2011 12:07, Jake wrote:
On Sun, 24 Jul 2011 11:03:38 +0100, Amanda
wrote:



I was wondering what is the best way to make a seal. I know you can
cement rubber to rubber, but I'm not sure about rubber to plastic, I was
considering using silicone (normal bathroom silicone) as it seems to be
very sticky on both types of surfacea and I already have a coiuple of
tubes, but I wonder if this could have harmful chemicals for the fish.

Any other things I could use?

(While writing this, I just realised that aquarium sealer must be safe,
but would it be flexible enough?)

Assuming that the "rubber" liner overlaps the pond liner and that the
pond liner is higher than the level of the pond, water should not flow
upwards back under the stream liner and you may have a leak somewhere
else - check around the pond at the level the water in it settles.

Thanks

I have checked for other leaks and there are none in the pond or
waterfall, what seems to happen is that even if the rubber liner of the
stream is higher than the water level, water still wicks back up underneath.

I think it's bit like an external window sill, if it doesn't have a
groove underneath the same thing can happen, most of the water falls
straight off but quite a lot still goes back up underneath. IA house I
lived in once had huge patches of damp wall because this groove was blocked.

The problem is you can't do anything like that with rubber. It needs to
have a vertical end rather than horizontal.

Anyway I'll try the pond liner repair kit, I hadn't realised it would
work with anything other than rubber. I think it's PVC, sooner or later
I know it should be replaced but that's a big job for now as the pond
has paving round the edge.



--
Best regards,
Ms Fish