Pond sealer & dead plants

 A few months ago we applied a 'pond sealer' as our concrete based pond had
sprung a leak.
Since then all has been fine with the fish & no leaking. They have even
spawned & we have young goldfish (fanatails & shebunkins) thriving in a
seperate area.
All the plants that we had previously were vigorous & needed constant
cutting back but have now died.
I went to a bit of expense & got new ones - same thing happened.
I could see no warning on the can & we followed directions to the letter re
changing the water etc., before re-introducing the fish again.
Is there anything we can do as we live in a hot climate & the fish need
protection from the heat. We do have shadecloth over the pond but would also
like some plants to survive.
Anyone got any ideas please?

Ta Pat

 

I have used the "pond sealers" without adverse effect on water plants.  We
have an outside pool of about 300l.  Plants grew very well, but gradually
they all "died".  New plants were added and those plants disappeared also.
Finally we worked out that the fish were eating the plants.  Wasn't a
problem when there were 4 goldfish, but as the numbers increased through
breeding, the plants could not keep up the growth.

Doug

 I get my water plants from the Hawkesbury River.  Same ones at Bunnings are
$14 a pop!


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