Backyard Aquaponics
A place to discuss aquaponics

My plant has been producing all summer, and in the last month, it has turned to look like this, and so are many seedlings I have put in for the winter crop.

Did you find out what caused it?

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Not yet; I do think I have a big problem with algae. This could be it. When I stirred the bottom of the FT up, there was a strong odour coming from the water, I have a 1500lt tank and two 500lt grow beds, and they constantly run with a bell siphon in each. Have about 40 yabbies' in the system but don't have a lid on top of the FT. I have just purchased some humic acid to help with the algae.

It might be worth checking the PH.You say a strong smell,like rotting egg?.

If you have dead zones & it's pushing the PH up,it would cause some nutrients to become unavailable.

Just cover the water with some thing while the light/sun is on it,that'll put a stop to the algae.

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Yes, it does smell like rotten eggs
I will be covering the tank ASAP
Thank you 7341

You might have a mineral deficiency issue as well, perhaps iron, calcium, magnesium, potassium, or another micronutrient,