Bakerman

Yo, I have a 6m by 3m by 1m deep pond which is lined and has fish.
Last year we had no problem with weed at all (I don't mean algae or floating weed just weed on the liner particularly around the water line) whereas this year it seems we have loads. We have plants/lillies in the pond so just killing anything green isn't really an option. The weed seems to be at its worst at the water line - I can pull it away but only get the excess strands leaving the roots(?) still clinging to the liner.

Ideally I would like some magic potion to through in which kills the weed (or is it algae?), leaving the plants and fish unharmed.

Anybody got any ideas ?

ajm

Sounds like blanket weed (hair algae). We have had a few threads on this recently, try:

http://bbs.scoobynet.co.uk/showthread.php?t=447752
http://bbs.scoobynet.co.uk/showthread.php?t=441778

RedFive

SIAP ?

rgv_stu

my mate had this problem in his pond / lake last year

this year he has dye'd the water blue and has not suffered with it, the trout / carp he has dont seem to have minded either

David Lock

Can you easily lower the pond level, by pumping to waste for example? Leave it low for a day or so which will probably kill the weed at the water line. Or get a big floor scrubbing brush and go around on your hands and knees and physically remove the weed. I use a plastic garden rake and rake up the weed starting at the bottom and up the sides. As said in other threads it seems to be especially bad this year. It does provide a hiding area for any baby fish born this season though. Happy scrubbing. I would try and avoid chemicals if you can. DL

the moose

I blame Tony Blair

ajm

Blair algae

RedFive

Blair seems to be more difficult to remove though.

Scooby-Mark

You can get plenty of liquid treatments from your local aquatic place that will kill off the blanket weed, another method is to add barley straw to you filter box ( If you have one ) A decent aquatic place should stock an all season option, its basicaly another filter mat that releases a dose of treatment into the water contiualy killing of the blanket weed.

Mark

Bonehead

Thought this was another thread about Bliar