Crystal clear water
Posted 24 November 2009 - 14:17 PM
I set up a pond last spring (actually I originally set it up for frogs to spawn in) and it became over-run with algae. It used to be about as bad as the pond my goldfish currently lives in (just a foot away):
But then I put in one of these reeds:
A few weeks later the water was crystal clear, like this:
So now I'm thinking of trying some aldrovanda in there.
Any suggestions on which variety would be a good starter. I'd love to grow one of the red varieties but the ones I've spotted all seem to be from Australia. I'm based in the South East of England and the pond is outside - so I'm guessing one of the Polish varieties will do pretty well.
Have any other UK growers had success in an outdoor pond? If so, which varieties are you growing?
Posted 24 November 2009 - 15:07 PM
Posted 24 November 2009 - 16:40 PM
I notice you describe my pot as a "small" one. It is about a foot deep by a foot wide. Is that large enough to grow aldrovanda? I'm guessing that the water just needs to be deep enough to not completely freeze. I've heard the turions sink to the bottom in the winter.
If this pond is too small I'll leave it for the frogs and see if I can set up a larger algae free pond for aldrovanda.
Posted 24 November 2009 - 17:05 PM
You can grow Aldrovanda in a pot this size, at least for a while. The problem is that once they have ideal conditions, they will grow and multiply VERY rapidly, exponentially, in fact, and will double their numbers every 5 to 7 days. Lubomir Adamec has published this a few times, saying "... aquatic CPs such as Utrics and Aldrovanda grow much faster than terrestrial CPs." They can grow one to three new axils per day, and produce two or three new growths every week. A few plants can grow to millions in a few months! Yes, they do sink when they've produced "hardened" dormant turions for the winter. They also have a very high winter fatality rate, up to 95% is actually normal!
In my pond, less than 20 turions that emerged from winter dormancy in April grew into this by August. - Rich
Edited by rsivertsen, 24 November 2009 - 17:19 PM.
Posted 24 November 2009 - 18:16 PM
Wow that's your pond? Impressive. Now I understand why you refer to my pond as being "small". I have to admit to suffering from a bit of pond envy.
I didn't realize aldrovanda were such prolific growers.
If mine grow that well perhaps I'll set up a biomass burner to reduce my heating bills. :-)
Posted 17 July 2011 - 15:38 PM
PS: I never heard about Aldrovanda and Equisetum, please post your results.
Posted 01 October 2011 - 02:14 AM
Posted 01 October 2011 - 06:27 AM
Posted 01 October 2011 - 10:52 AM
take out the fish
replace water with rainwater
plant extensively with marginals including sedges, rushes to soak up nutrients
leave it a year to settle and once water is crystal clear add Aldrovanda
Posted 01 October 2011 - 11:54 AM
Could i start off converting while that fish are still inside?
Also, seeing as i have been watering my plants for months with tap water, so would it be ok to fill it with that?
Posted 01 October 2011 - 12:24 PM
Posted 01 October 2011 - 14:44 PM
Someone stop me pretty quick, before i get conditions wrong.
Posted 11 November 2011 - 15:46 PM
Posted 11 November 2011 - 18:02 PM
Posted 19 May 2012 - 03:09 AM