Cobwebs on live rock?

Good Morning Tony,

 

I’m not sure if you’re the correct person to ask but I can’t find an answer for this.

 

My tank is 320 litre and been set up for almost 5 months, all the levels, PH, Ammonia, Nitrates, Nitrites & salinity etc is spot on, which I check regularly.

 

However, recently I have been seeing a cobweb like substance covering the power heads, heater and live rocks; it’s been like this for a week now and doesn’t appear to be affecting the fish, the hermits or anything else.

 

I‘ve got in the tank:

 

30 kilos of live rock

5 chromis

1 tank bred clown fish

2 gobys

2 feather duster worms

15-20 hermit crabs

2 sand sifter star fish

3 emerald crabs

2 shrimp

2 turbo snails

 

I’ve got the brown algae which seems to be disappearing now and everything seems healthy enough and has done for a while. People on the internet forums say its sandworms, webs made from the turbo snails, vomit from the live rocks or vomit from the feather duster worms but I cannot find a definitive answer.

 

My only concern is that it will not harm the tanks cycle and everything in the tank, I suppose without a picture you wouldn’t know what it is but from your knowledge, have you heard of this cobweb like substance?

 

Best Regards

Andy