What's cause of these hairy plants?

[martinmin]

I trimmed the plants in the foreground, but it didn't regrow. Instead, it becomes so ugly. Gray, hairy. Please see the pictures. The plants almost died, right?

 

[JoeQ]

How old is this bowl? I'm assuming Wallstead method?

[martinmin]

On 9/10/2023 at 9:16 AM, JoeQ said:

How old is this bowl? I'm assuming Wallstead method?

What do you mean? It is not new tank. What is Wallstead?

[JE47]

Walstad refers to a method which relies on plants to provide filtration for a fish tank as opposed to using a machine for filtration

Edited September 10, 2023 by JE47

[martinmin]

On 9/10/2023 at 1:30 PM, JE47 said:

Walstad refers to a method which relies on plants to provide filtration for a fish tank as opposed to using a machine for filtration

In that case, this little tank has a filter. Are these pale, gray stuff algae or not? 

[JoeQ]

On 9/10/2023 at 7:01 PM, martinmin said:

In that case, this little tank has a filter. Are these pale, gray stuff algae or not? 

With the limited info you provided I'd assume its a fungus, either coming from the wood itself or an immature eco system.

[martinmin]

On 9/11/2023 at 5:31 AM, JoeQ said:

With the limited info you provided I'd assume its a fungus, either coming from the wood itself or an immature eco system.

If it's fungus, how to treat fungus?

[JoeQ]

I am not sure, I have never treated fungas before. It should eventually disappear as your eco system grows.

[Supermassive]

I don't think its fungus. That looks like dragon stone and not driftwood. I'm assuming its some kind of hair algae either from too much light or too much nutrients. And the plants don't look like they are dying to me. I'm thinking its too much light because the plants under the rock, where its shaded, don't have any algae. Do you know how powerful your light is? And how long do you have it on for everyday?

[Rube_Goldfish]

On 9/13/2023 at 1:58 PM, Supermassive said:

I don't think its fungus. That looks like dragon stone and not driftwood. I'm assuming its some kind of hair algae either from too much light or too much nutrients. And the plants don't look like they are dying to me. I'm thinking its too much light because the plants under the rock, where its shaded, don't have any algae. Do you know how powerful your light is? And how long do you have it on for everyday?

Yeah, I second this diagnosis. I think I see hair algae on the dragon stone itself, as well as whatever stem that is on the right (looks like a Bacopa species to me).