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Old 03-04-2023, 02:46 PM   #1
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Join Date: Feb 2021
Location: Kentucky
Posts: 55
Green Algae out of nowhere

Iím stumped. In the last three days, Iíve had a green slimy algae attack on my plants. It has nearly encased one of my floating plants. The only changes in the last 8 days since the water change are:

1. I added a sponge prefilter over my intake valve on a Fluval 50 HOB because I bought some trapdoor snails. The outflow is set to its highest output.
2. I reduced the red LED on my Fluval from around 45% to 10%.
3. I live on the Ohio River several hundred miles downstream from the New Palestine train derailment. My local water company did not say they altered chemicals in our water because of it.

My readings 5 days ago were ammonia 0, nitrite 0, and nitrate 10. All the fish are fine, but Iím losing my mind. Itís a 29 gallon tank thatís been up for five years. Iíve got 50 years in the hobby and Iím at a loss.

Magaratz is offline   Reply With Quote
Old 03-04-2023, 06:54 PM   #2
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Location: Perth in Western Australia
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Picture of the algae and one of the entire aquarium?
How long is the light on for each day?
What colour spectrum/s are you running on the light?
Colin_T is offline   Reply With Quote

algae, green, green algae

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