White, lacy deposits on glass

[BlaiseinLondon]

Overnight some white, lacy deposits appeared on the glass of my community tank, some with trailing threads. Two days later it's completely gone. What was it please?

 

[CaptainBarnicles9]

No photographic evidence?!

 

[Magnum Man36 151]

I had similar ( by description ) on one tank… I think the best guesses were a showy type of fungus, it didn’t harm the tank… I’ll see if I can find some pictures of mine…

this is that thread, that has several pictures, as it developed over a few days

any idea what this strange critter is???

I suspect it's a fungus, I've never had one like this in a tank before... I saw it tonight, as the lights were going down, apparently pretty rapid growing... an adult Cory beside it for scale... this is a cool water tank, white sand bottom, with tons of pothos vines growing out of it... should...

www.fishforums.net

 

[BlaiseinLondon]

 

[BlaiseinLondon]

Those are the best I've got, I'm afraid, because the deposits initially disappeared before I had a chance to photograph them. As you can see it reappeared on the hide, and there is a small amount on the glass, directly above the rear (empty - getting new plants this week) terracotta pot. Really hard to photograph though. Tank has been cycled for about two months and has 6 orange lemon tetra and 6 sterbai, and a few assassins. Ammonia and nitrite 0; nitrate 40 (which is the out-of-the-tap measurement here!). I do a 33% water change once a week.

 

[BlaiseinLondon]

I had similar ( by description ) on one tank… I think the best guesses were a showy type of fungus, it didn’t harm the tank… I’ll see if I can find some pictures of mine…

this is that thread, that has several pictures, as it developed over a few days

any idea what this strange critter is???

I suspect it's a fungus, I've never had one like this in a tank before... I saw it tonight, as the lights were going down, apparently pretty rapid growing... an adult Cory beside it for scale... this is a cool water tank, white sand bottom, with tons of pothos vines growing out of it... should...

www.fishforums.net

Thanks. Mine is much whiter and more one-dimensional; like a tiny piece of lace stuck on the glass.

 

[GaryE]

The first time I "discovered" uninvited life on the glass of my aquarium when I was a kid, it was a beautifully patterned creature that lasted a couple of weeks. It was all geometric patterns and whitish to translucent, and I was sorry to see it go. It looked like living lace. I've not seen one like it since, though many weird and wonderful life forms have appeared in tanks since then.

 

[connorlindeman33 34]

Slime mold. Its a sign that your aquarium is in excellent health.