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The Norfolk Broads Forum / General Chat / Beware the dreaded weed
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Posted By Discussion Topic: Beware the dreaded weed

Similar Threads That Might Help :
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Steve51
Sep-15-2008 @ 8:16 PM                           Permalink
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Mardles sometimes
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Friends of mine took their Elysian C/C up to Coltishall at the weekend and on the way back suffered an impeller failure due to weed blockage. Luckily they have Boulter's equivalent of the AA and they came out to Wroxham and fitted a new impeller. The fitter told my mate that his was the 6th. boat that week that they'd had to replace the impeller on. All the boats in question had been up to Coltishall.

Steve.

I know me pointy end from me blunt end!

VetChugger
Sep-15-2008 @ 9:10 PM                           Permalink
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Surely if the filters on the raw water system were in place the weed would never reach the impellors? Unless the filters were blocked and the impellor was running dry?? There would have been an indication of this though in the engine temperature.
Royalls had a head gasket to replace last week due to over heating and weed. Again though, the hirer should have noticed a rise in the engine temperature.

Trevor

www.normanboats.co.uk


paul&lorna
Sep-15-2008 @ 9:47 PM                           Permalink
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If it's keel cooled like ours it wouldn't show on engine temp. the pump only cools the geagbox then to the exhaust. As i found out earlier this year when i cleaned the filter then forgot to turn the cock back on Blush

paul

Steve51
Sep-15-2008 @ 10:04 PM                           Permalink
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Trevor,

Absolutely right. The filter was blocked by weed and the pump ran dry. With the exhaust at the back, you're not aware it's running dry and lets face it we don't watch the temp guage the whole time. By the time he spotted the rising temperature, it was too late.

Steve.

I know me pointy end from me blunt end!

hmmcrunchy
Sep-15-2008 @ 11:09 PM                           Permalink
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i popped up there the other day had to stop twice to clean the weed filters that were clogged up totally, its quite bad. as was gays staith and neatishead all that blooming algae did the same

Karen&Mike
Sep-16-2008 @ 1:03 AM                           Permalink
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At Gays staithe and one or two other spots, we have seen a lot of that stuff that looks like the "fairy moss" found in garden ponds - is that the same as the "pennywort" referred to in the Broadcaster? It sure is prolific stuff and will cause some serious problems for wildlife and the entire river eco system. Last year we noticed that it had formed a complete cover over the pond/inlet in the back garden of the little cottage at Gays Staithe but now it has spread out into the water around the staithe.

We "acquired" some somehow in our smaller water feature at home and this has now been transferred on the backs and feet of frogs to our main pond - we fish it out all the time but it would take over in an instant if we let it, so imagine the consequences if it gets half a chance on the rivers. I've even found it on the cats tail!

Mike tells me we got a bit of the Coltishall "flowing" weed in our filters when we were up there a couple of weeks back but he cleaned it out at the time, so I have stopped worrying about this particular weed aspect for now...(until the next visit up there!)

Karen

"Wind up the elastic band Karen - we're setting off!!"

Swordfish
Sep-16-2008 @ 7:52 AM                           Permalink
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Also quiet bad at Dilham this year so keep an eye on filters if your heading that way..

Paul

Marshman
Sep-16-2008 @ 8:06 AM                           Permalink
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No Karen it is not pennywort, or at least I hope its not!!!!!

If that gets into the system you will not be worried about your filter blocking, as you will not be moving!!!!!

The trouble is you all think I am joking!!!! Even worse would be parrots feather - with that you really will be walking o n water within 6 months. Still I suppose that will help the conservationists as navigation would probably cease at least on the slower running bits and broads!!!!

Alarmist probably but you lot will have to hope volunteers keep it in check - oh how I love getting wet and soggy for your sakes!!!! And mine!!!

AdnamsGirl
Sep-16-2008 @ 9:46 AM                           Permalink
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I know that this link has been posted before, but with talk of Floating Pennywort I thought it worth posting again. This site gives photos and details on how to identify the invasive weeds that cause real problems in the UK, including Pennywort, Parrots Feather and Japanese Knotweed amongst others.

http://www.t-c-m-rd.co.uk/invasive-weeds/floating-pennywort/



Carol

http://www.broadlandmemories.co.uk

Steve51
Sep-16-2008 @ 1:38 PM                           Permalink
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The weed at Gays Staithe is common old duckweed and grows prolifically on still or slow moving water, particularly where there is a rich nutrient source on the bed. I get plagued with it in my garden pond. As it floats entirely on the surface, I doubt it would cause a problem with cooling water intakes which are below the water line. The weed on the Coltishall stretch is the stringy stuff that floats below the surface and gets sucked into the intakes. Frown

Steve

I know me pointy end from me blunt end!

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