Aquaria Central

[fabsroman]

Originally Posted by A. Nonymous

I will try to add more agitation. The one tank that seems immune does have a pretty gnarly hob filter. Maybe that's my key. The tanks that are infested have canister filters.

ToddnBecka already mentioned this. Use a surface skimmer with those canister filters. If you are running canisters, this shouldn't be too hard to do. I used the Fluval Skimmer on a 105 back in April after really neglecting the tank because of tax season and finding duckweed so thick that the plants underneath could not get any light. I scooped out what I could and set up the canister with the skimmer. After a month or two the remnants of the duckweed were gone, and I have yet to see any in that tank since then. Just make sure you clean out that canister filter on a weekly basis. I ran mine without any carbon in it, just the standard foam, polishing pads in the first chamber, and nothing in the second chamber. Seemed to work just fine.

[The Zigman]

I have it too, its outta control its worse than the worst algae.

I am making a skimmer to get rid of this crap...

My 125 is covered with it, as well as 3 20 gal tanks.

It drives me nuts!

[fabsroman]

Here is the skimmer I am talking about:

http://www.thatpetplace.com/pet/prod/215112/product.web

I broke off an extra tab from the skimmer in three different spots so that it could suck down the duckweed a lot easier. It really worked well. That is why I don't understand how people have such a hard time with this stuff unless they have floating plants that they cannot remove from the tank while the skimmer does its job.

You could also take a spare tank and use it as a sump with an overflow and that will get the job done too. You just have to throw all the water out of the sump tank and clean it really well. Obviously, make sure the sump tank isn't so low that the water level gets anywhere close to the return pump.