Mounds in sand. Look like ant hills.

[Ricky@3rdshift]

When I get up in the mornings I have several mounds of sand that look like ant hills in various areas of my tank. Any ideas on what is doing this?
I don't see anything disturbing yet except the mounds.

Thanks
Rickly

 

[Fluff]

What critters do you have in your tank? Are the mounds at the base of your liverock?

 

[Ricky@3rdshift]

Ok I have 3 crabs 2 red legs 1 blue,
1 emerald crab, 5 snails all of the turbo variety, 1 green chromis, 1 yellow tail damsel, 1 dominio damsel, 1 yellow damsel, 1 green clown goby, and about 40lbs of various LR mostly marshell, and Fiji. i have had possibly some spagetti worms that leave the webs all over, and have various fether dusters on the rocks, as well as various #'s of pods as of recently.

 

[DeFeKt]

sounds like one of your fish are getting frisky.

 

[Fluff]

If the mounds are at the base of the rock, it could be from some rock boring worms escavating.

 

[Ricky@3rdshift]

Its out in the middle. Looks like something is pushing up from the bottom out to the top. or burrowing down like an ant. they are only like 1/2 inch in diameter total.

 

[seve1]

I have seen mounds like that with spaghetti worms. Do you see any small hairlike appendages extending from the mounds?

 

[Ricky@3rdshift]

nope sure don't I will try and get a pic

 

[DragonForce]

Try and look REAL close if you see a little tiny duster worm coming out of the hole. I have alot of these on my rock that has turned up the last few weeks.