Q&A for How to Culture Greenwater

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Even after sieving all the leaves out, it is okay for the green water to have a thick, more green sediment at the bottom and the top to clear up a little and become less green?

Community Answer

Yes, this is probably common as some of the blended leaves will be in pieces that are too small for a simple filtering material. If you want to filter as much as possible I suggest something like nylon stocking material. It tends to filter better than cheese cloth and you can get it for $1 at a dollar store. I use them as a mechanical filter for my 55gal tank.

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The green water in one of my plastic buckets turned red, why?

Community Answer

There are many types of algae, blue, green, and the most primitive type are red. I am assuming that somehow red algae spores got into your greenwater culture, and took over.

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Question

I had fish poop from another aquarium I wanted to use for watering the plants, but the water turned green in a few days. Is that green water safe for feeding?

Community Answer

Yes, it is. You'll get an added benefits from the algae and other microorganisms that are in the green water.

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Question

Will adding greenwater create an algae bloom in my aquarium?

Community Answer

Greenwater IS a form of algae bloom, so yes.

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Question

What kind of leaves can I use?

Community Answer

Any leaf would work more or less, it is the decaying leaf that aids in the production of the algae.

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Question

Is green water good for fish fries?

Community Answer

Yes, green water is generally good for fish fries since the water contains a lot of zooplankton.

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Question

Do I need an aerator to keep the phytoplankton alive?

Community Answer

You can use an aerator for better aeration, if you're going to store this for a long time and culture more blooms with it. But if you only need it for immediate use, then the oxygen mixed while blending it and transferring it from one container to another should be enough.

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Question

How do we add greenwater to a betta fry tank?

Community Answer

Remove the fish, put old water in a clear container and expose it to the sun. It will take a while for algae to bloom. You can also get live leaves, wash and blend them, and expose to the light. You can add fish micro pellets to speed up the process.

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Is greenwater good for keeping daphna?

Dhivyesh GS

Community Answer

Yes! Greenwater has the best chances of yielding daphnia and mosquito larvae.

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Are algae food for fish?

Community Answer

It depends on the type of fish. Some fish, like otocinclus catfish and plecos, will eat algae but most other fish do not. Even then, you should supplement their food since most cannot survive solely on algae.

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