Anyone know what these are?

[FredtheShrimp]

the only time ive seen these is when starting up a new tank and cycling it, as im doing with my biocube atm and i saw them on the glass for about a week then they vanished.

 

[liljosh609]

They've now been visible for 10 days to 2 weeks. However their numbers are slowly going down.

 

[Minkota]

So I couldn't just kill them one by one? Also I heard they just go away on their own.

I have had them before, mine were in my sump and disappeared after a few weeks. Haven't seen any since.

 

[melosu58]

I had those on the glass in my seahorse tank and they did not last long. The seahorses ate them up so fast. Those kind are not bad at all and as others say they wont last long.

 

[liljosh609]

Ok. Thanks