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Duckweed Part 1


tithra

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The duckweed I ordered from Aquabid came in the mail today :)

I bleached it to sterilize, and I half expected it to turn white (someone? posted a video over the summer of duckweed they had bleached that turned white/yellow), but it didn't :) It is currently in a 2 gallon container. I am going to go look for a longer shallow container to keep it in this weekend, and this summer I plan to put it in a big tub outside to grow (with mosquito netting over the top so that it doesn't turn into a larvae pool).

Before bleach:

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DSC00515.jpg

After bleach:

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It reportedly came from a 'fish free' aquarium (part of the reason I bought from this seller), but it came with some ride alongs nonetheless. I am curious if anyone can identify them? They look like maybe they are some type of shrimp? The bleach did not kill them so I spent a half hour transferring the duckweed from one clean bucket of water to the next until I got rid of all the ones I could see.

I am super paranoid about bringing anything nasty into my aquarium from this stuff, so I think I will just let it sit for a couple weeks before I try feeding it to the fish. Hopefully the bleach was enough to take care of anything, but the fact that it came with things swimming around in the water freaks me out a bit.

19 Comments


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  • Regular Member

Oooh I want to see nom-nom chomp chomp video when you feed them!!! You could always take it to a tanning bed hehe :)

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  • Regular Member

I don't blame you for being paranoid about nasty stuff getting into the tank. Maybe ask the seller if they had shrimp in the area where they had the duckweed?

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  • Regular Member

I don't blame you for being paranoid about nasty stuff getting into the tank. Maybe ask the seller if they had shrimp in the area where they had the duckweed?

yeah, I may email her out of sheer curiosity :) I wish you could buy duckweed seeds and just grow it yourself so you know it's clean!

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  • Regular Member

Tithra, have you considered boiling the duckweed before giving it to your fish? If you boil it, then cool it and do that process 3 times it will kill pretty much anything on the planet including endospores.

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  • Regular Member

Tithra, have you considered boiling the duckweed before giving it to your fish? If you boil it, then cool it and do that process 3 times it will kill pretty much anything on the planet including endospores.

I hadn't thought about that. Ideally I would like to keep some (live) duckweed in the tank at all times, not sure if this will work out or not. I have to wonder how boiling it that many times would effect the nutrient content, as even boiling veggies once causes some decrease in vitamins/nutrients etc. I think I will just QT it for a few weeks to start and make sure nothing hatches lol :P

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  • Regular Member

These things fascinate me. I kind of find them cute. I honestly doubt they are in any way harmful to the fish, especially not after they themselves got disinfected :rofl

For the pond and mosquito larvae, you could also get a few gambusia and keep them in the pond. That way you will provide food for the duckweed, while the gambusia will eat pretty much any kind of insect/insect larvae that gets into your pond :)

They are also very hardy. Over the winter when you bring the duckweed inside, just bring these guys in too.

Now I miss little Ducky again :(

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  • Regular Member

These things fascinate me. I kind of find them cute. I honestly doubt they are in any way harmful to the fish, especially not after they themselves got disinfected :roflFor the pond and mosquito larvae, you could also get a few gambusia and keep them in the pond. That way you will provide food for the duckweed, while the gambusia will eat pretty much any kind of insect/insect larvae that gets into your pond :)They are also very hardy. Over the winter when you bring the duckweed inside, just bring these guys in too.Now I miss little Ducky again :(

Thanks for the comment Fang. I unfortunately do not have anything that comes close to a real pond, it will just be a tub of water with duckweed growing in it :) I guess I could add a filter to the container though, but it will only be 20 gallons. I will look into gambusia requirements, not sure how much space etc they need? Great idea though!

:( Ducky.

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  • Regular Member

They look like the little shrimp we have in the lakes and ponds around here. I totally can't believe they survived the bleach!!!! Crazy!!!

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  • Regular Member
Tithra, have you considered boiling the duckweed before giving it to your fish? If you boil it, then cool it and do that process 3 times it will kill pretty much anything on the planet including endospores.
I hadn't thought about that. Ideally I would like to keep some (live) duckweed in the tank at all times, not sure if this will work out or not. I have to wonder how boiling it that many times would effect the nutrient content, as even boiling veggies once causes some decrease in vitamins/nutrients etc. I think I will just QT it for a few weeks to start and make sure nothing hatches lol :P

hmm something a little interesting to ponder from a BBC Documentary.

Boiling Veggies does indeed cause them to loose some of there nutrients however raw veggies are harder to digest in humans therefore a cooked veggie allows easier digestion and therefore a higher uptake of nutrients, in conclusion you will get more benefit out of a cooked vegetable than an uncooked one even though the uncooked veg contains more nutrients. In The Documentary they suggested that cooking food caused an increase in our rate of evolution because we could get more nutrients out of cooked food.

could it be the same for fish ;) just something to ponder....

couple of years feeding fish cooked food they could have legs :lol

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  • Regular Member

I think it would depen

Tithra, have you considered boiling the duckweed before giving it to your fish? If you boil it, then cool it and do that process 3 times it will kill pretty much anything on the planet including endospores.
I hadn't thought about that. Ideally I would like to keep some (live) duckweed in the tank at all times, not sure if this will work out or not. I have to wonder how boiling it that many times would effect the nutrient content, as even boiling veggies once causes some decrease in vitamins/nutrients etc. I think I will just QT it for a few weeks to start and make sure nothing hatches lol :P
hmm something a little interesting to ponder from a BBC Documentary.Boiling Veggies does indeed cause them to loose some of there nutrients however raw veggies are harder to digest in humans therefore a cooked veggie allows easier digestion and therefore a higher uptake of nutrients, in conclusion you will get more benefit out of a cooked vegetable than an uncooked one even though the uncooked veg contains more nutrients. In The Documentary they suggested that cooking food caused an increase in our rate of evolution because we could get more nutrients out of cooked food. could it be the same for fish ;) just something to ponder....couple of years feeding fish cooked food they could have legs :lol

I think it would depend on how long goldfishes digestive tracts are-god it's been a long time since I took zoology- but typically herbivores have a long digestive tract (i.e. ruminants like a cow) whereas carnivores have a shorter one and omnivores in between. I'm not sure how it applies to fish though.

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  • Regular Member

Status update on the duckweed/little aliens?

Nothing ever grew in the water again so I must have gotten them all out/killed them all. I never contacted the seller to find out exactly what it was. I finally put some duckweed in the tank today and Edie hasn't even noticed it's there! I am going to have to figure out some way to make them figure out it's food!

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  • Regular Member

Puff is back in QT on some medigold due to his recurrent wen infection :( So he does not get duckweed yet

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