What are these hanging on the sponges/foam?

[H]-[H]

Can anyone help to identify these things? They appear to be stringy and cotton-ish..
From the outside I only see the last foam full of these things hanging at the bottom probably due to the water flow which pushes them out..
I have attached pics for reference (first pic shows the water flow)

 

[H]-[H]

No one knows?

 

[ska_kid]

Aliens

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[ashok.antony]

Looks like some kind of algae (filamentous?). I have seen this appear when you use water conditioners too much or if there are no live plants and there is a waste spike. Have you checked your water and saw any change in NH3 or NO3 or NO2?

 

[Redearsunfish]

1. your midas/reddevil is photo-bombing you in the first pic. lol! He's like "what the heck are you pointing to, what is the meaning of these arrows?" LOL!!!

2. Excess of Beneficial Bacteria, or bacterial overgrowth?

 

[H]-[H]

Looks like some kind of algae (filamentous?). I have seen this appear when you use water conditioners too much or if there are no live plants and there is a waste spike. Have you checked your water and saw any change in NH3 or NO3 or NO2?

I did a quick search on filamentous algae and mine looked nothing like that especially the color.. Hmm, I tend to overdose on water conditioners but just a little over..
I also have some pothos plants in the filter..
I don't check my water parameters, usually I just see the fish behavior.. if it's acting strangely then I know something is not right.. Else the fish is doing fine and eats like a champ

1. your midas/reddevil is photo-bombing you in the first pic. lol! He's like "what the heck are you pointing to, what is the meaning of these arrows?" LOL!!!

2. Excess of Beneficial Bacteria, or bacterial overgrowth?

Well, the sponges were in the filter for 2 weeks.. I'm not sure if BB grows that quick, let alone having excess of it..
But if it does, then I'm not complaining.. lol

 

[H]-[H]

By the way, when I take out the first layer of sponge to wash off the detritus, I see the same stringy cotton-ish things on the surface of the second layer of sponge..