Duckweed dying?

[Harshit]

Before making a real pond, I have made a 2x2feet round micro pond of 30liters with tape water. So that I can understand how the big one will perform.
Results(Temp=36-40°C)
-Blanket weed ready in 4days
-Mosquito Larva Ready in 3days lol
-Lettuce doing great from 4dayz
-Plants an hydrila yesterday, lets see how it goes.
-But am worried about my duckweeds turning pale(I think its due to 40°C temp). What do you think?

 

[MitchM]

It's possibly suffering from a lack of nutrients.
Can you add any river water to the container?
Have you performed any water tests?

 

[sissy]

I have found that duck weed at the end of the season sinks to the bottom and then come spring it is like a reboot it is back .I bought duckweed 6 years ago and it keeps coming back every year

 

[Harshit]

It's possibly suffering from a lack of nutrients.
Can you add any river water to the container?
Have you performed any water tests?

No, May be due to nutrient efficiency.

I have found that duck weed at the end of the season sinks to the bottom and then come spring it is like a reboot it is back .I bought duckweed 6 years ago and it keeps coming back every year

But the duckweed I'm growing indoor with other plants are very healthy. From there only I have moved some of them outside.

 

[sissy]

mine already with the 50 degree night temps has turned yellow and went to sleep only to reappear next year .I think it has more to do with water temps. than any thing .Even the duckweed that is in the stock tank with miracle grow has gone to sleep .i will have to check water temps to see how cool water is .

 

[Harshit]

mine already with the 50 degree night temps has turned yellow and went to sleep only to reappear next year .I think it has more to do with water temps. than any thing .Even the duckweed that is in the stock tank with miracle grow has gone to sleep .i will have to check water temps to see how cool water is .

I think now they're doing normal except some, it may be due to change in location.

And yeah I wanna know what type of fertilizer to use for both floating and submerged. Solid or Liquid?
What ingredients etc?

 

[bonox]

I think it’s just the heat. I have about ¼ of my pond covered so the fish had somewhere to get out of the sun while my lilies were growing. All the duckweed under the cover is rich green, while exposed duckweed is brown/yellow and looks like it’s on the way out, if I swirl the water so the brown ones are covered, after a few days they become green again and vice versa.