Clear crystals growing on rock

[Nathd2311]

Can anyone help i.d what this clear crystal like stuff is growing on my rocks please?

 

[Crabs McJones]

Is it hard or soft, almost looks like sponge growth to me.

 

[Nathd2311]

Is it hard or soft, almost looks like sponge growth to me.

It's softish, doesn't take much to scrub off with a tooth brush

 

[YBF_Reeftank]

I don’t think video works on mobile. Sorry

 

[Nathd2311]

Pic

 

[Crabs McJones]

sponge growth

 

[Nathd2311]

sponge growth

There quiet alot of it under the center piece of the rock work and towards the back, silly question but would they be sucking up nutrients? I do seem to have lowish nitrates (2/3ppm) even tho I feed decent amounts and no skimmer due to it being a nano tank

 

[lil sumpin]

from what I’ve been told: harmless filter feed, likes to grow in dark corners of the tank and can take off if there’s a lotta silicates

 

[Crabs McJones]

There quiet alot of it under the center piece of the rock work and towards the back, silly question but would they be sucking up nutrients? I do seem to have lowish nitrates (2/3ppm) even tho I feed decent amounts and no skimmer due to it being a nano tank

Not directly. They're filter feeders so the detritus that would float around the tank and brake down into nutrients are taken in by them.

 

[betareef]

I see nothing to be concerned about. Just normal growth of things on a submerged rock.

 

[Nathd2311]

Thank you for your replies