Shrimps are still alive, but algae almost out of control

I was wrong. The shrimp did not die. The day before yesterday I saw all five of them hanging out. Hosanna!

The Ceratophyllum demersum and Egeria densa were dying quicker than they grew. I had to remove them. They are now in a quarantine bucket to see if they can recover at all. I also removed the Java moss. I don’t know if they were dying because of the high temperatures (way over 27 ­°C), allelopathy, or too much light. The temperatures seem to be down to the more acceptable 26 °C now. I also reduced the illumination duration to 10.5 hours plus 4 hours of indirect daylight (what Walstad recommends as a siesta).

The tank currently contains these plant species:

  • Helanthium quadricostatus
  • Hygrophila polysperma
  • Eleocharis acicularis
  • Hemianthus micranthemoides
  • Rotala indica, or maybe rotundifolia
  • Heteranthera zosterifolia, shown below

 

Also I found a some duckweed and other floating plants which I have put in the tank as well. They are doing ok, but are not growing too much. What is growing, however is brown algae and other algae. They are growing so fast that I have to brush them off the leaves every other day and exchange 50% of the water or more.

Tomorrow I’m getting some snails which should help with eating the algae and dead plants.

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