Benjamin Benjamin
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  • Joined: 28/10/2020 23:00
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  • Posted on: 3/3 19:50
Need some advice please #1
Hello again.

My 30ltr tank is running since October, all was good with no major drama until about 5-6 weeks ago when algae took over. My wife liked to feed the fish and let the lights run for ~ 10h a day, the algae mended her ways.

Drastic action caused the algae to disappear but the water remained cloudy so for the last 2-3 weeks I change ~ 30% water (10ltr). However, there is white foam floating on top with lots of brown algae (yesterday changed 13ltr and cleaned the plant's leaves with paper but today it looks as I did nothing). The water parameters are good, 0 ammonia, 0 - 0.25 nitrite, nitrate was not tested but the tap water are at 40ppm. I can't see the nitrite climb drastically in 2-3 days period.

Any idea what else can be done?

Thanks.

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Benjamin Benjamin
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  • Posted on: 3/3 19:52
Re: Need some advice please #2
...and another photo (sorry, didn't manage to add in one post).

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fcmf fcmf
  • Coldwater Adviser
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  • Joined: 17/10/2014 12:20
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  • Posts: 989
  • Posted on: 4/3 17:14
Re: Need some advice please #3
That looks like brown algae / diatoms. You might find this helpful:
https://www.thesprucepets.com/aquarium-algae-1379979

The white foam is most likely an accumulation of bubbles. Ensuring the filter outlet is skimming the water surface ought to address that.
Benjamin Benjamin
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  • Posted on: 4/3 20:20
Re: Need some advice please #4
Thank you.