Duckweed - The Planted Tank Forum
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post #1 of 20 (permalink) Old 01-13-2008, 04:24 AM Thread Starter
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Duckweed

Hi,
I just found out that duckweed is a good food for goldfish. I want to plant it in small 5 gal tank by window sill and feed my ranchu every week. My window is facing to south. Is it possible to plant them without using any extra lighting system? Will they grow fast enough to feed my 10 fish every week? Is there any alternate way? Thanks.
Fred
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post #2 of 20 (permalink) Old 01-13-2008, 04:26 AM
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Originally Posted by small_ranchu View Post
Hi,
I just found out that duckweed is a good food for goldfish. I want to plant it in small 5 gal tank by window sill and feed my ranchu every week. My window is facing to south. Is it possible to plant them without using any extra lighting system? Will they grow fast enough to feed my 10 fish every week? Is there any alternate way? Thanks.
Fred
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post #3 of 20 (permalink) Old 01-13-2008, 04:34 AM
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I'll send you out like, 20 lbs of it. I think a goldfish tank is the only place it won't overwhelm the system.

In all seriousness, I have found this growing in my toilet when I got some in there and it clung to the sides. You can grow this in a wet shoe.

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post #4 of 20 (permalink) Old 01-13-2008, 05:03 AM
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Doubt you can keep a going supply for 10 goldfish in a 5 gallon, and no you will not really need any extra lighting system.
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post #5 of 20 (permalink) Old 01-13-2008, 05:19 AM Thread Starter
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Thanks everyone. It's now to get betta bowl (5 g tank) or something similar and some duckweed.
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post #6 of 20 (permalink) Old 01-13-2008, 05:32 AM
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Or just tubs. No way you can supply enough for 10 goldies in a tank with such a small surface area.
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post #7 of 20 (permalink) Old 01-13-2008, 07:34 AM
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Just go to target or walmart and get the shallowest storage container you can find and put it by a window

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post #8 of 20 (permalink) Old 01-13-2008, 06:14 PM
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Duckweed will grow anywhere with water and light. You can add plant nutrients if you want.

That being said, I'm planning to get a dedicated tank for 1 goldfish so it can eat all the duckweed it wants.
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post #9 of 20 (permalink) Old 01-13-2008, 07:08 PM Thread Starter
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Thanks everyone. I like the idea of shallow tub. I will go check soon.
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post #10 of 20 (permalink) Old 01-13-2008, 07:39 PM
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I fyou want a nutrient boost use your water change water to fill and refill the container you grow the duckweed in. Goldies do love the stuff. So do turtles IME

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post #11 of 20 (permalink) Old 01-13-2008, 11:14 PM
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What you're saying is, get a turtle

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post #12 of 20 (permalink) Old 01-14-2008, 01:47 AM
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turtles eat anything aquatic

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post #13 of 20 (permalink) Old 01-14-2008, 02:51 AM Thread Starter
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ok, I will replace water with old tank water. I am worrying about mosquito. Last time when I qt my plant, it end up with a lot of mosquito.

Is there any way to prevent them?

I know they can't lay egg in salty water but I am not sure whether duckweek and salt go together or not?
Thanks.
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post #14 of 20 (permalink) Old 01-14-2008, 04:26 AM
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If you run a powerhead in there, you probably won't have any mosquito problems. Stagnant water is the issue.

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post #15 of 20 (permalink) Old 01-14-2008, 02:27 PM
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get some gambusia (mosquitofish) and put them in there.

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