White tube things

[soxfan0426]

 

[reefer4816]

Sponges. Harmless. Sign of good water quality

 

[soxfan0426]

Sponges. Harmless. Sign of good water quality

They came out of nowhere.... all over the glass in the sump. Still harmless?

 

[reefer4816]

Yes. Let me guess. Your system is about 3 months old?

 

[soxfan0426]

No, about 7 or 8

 

[reefer4816]

Ok. These come out in healthy systems at between 3 months to a year

 

[reefer4816]

Usually in dark places. Like the sump

 

[soxfan0426]

Gotcha, do they go away? I've never seen them in other tanks

 

[brett_schn]

My friend has them. They are good. They are filter feeders so basically another stage of filtration for u

 

[MelbourneReefer]

It's spongebobs house it means your tank is animated