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Wsantos
04/23/2013, 06:00 AM
Bottom of the tank / Righ side only/ 170G Bow / 2-1500 Koraline Evolutions 3/4 of the way down.

Appeared 2 weeks ago after my Pink Spotted sand sifting Goby jumped out the tank and died.

Seems to grows where water flow is not that fast, but its a nice current. The power head on the left side has no traces of this stuff.

First coating was a crust. Then the slime/hair/stringy stuff appeared.

Its like a transparent coating but purple

The darker patches actually move with the current. It looks like waves

And its only on the sand
tektite
04/23/2013, 07:37 AM
Coralline algae is hard, that's cyano.
Wsantos
04/23/2013, 08:08 AM
Coralline algae is hard, that's cyano.

Underneath where it formed is a hard crust, this is now growing on top of it
xfactor1315
04/23/2013, 08:12 AM
its cyano, you need to vaccum it out and find out whats causing it.
Sugar Magnolia
04/23/2013, 09:18 AM
Definitely cyano. Are you using RODI water? What's your routine maintenance? Running any GFO?
leveldrummer
04/23/2013, 09:51 AM
the crust you are seeing is just the sand stuck together, you can bust it up with a stick or something and it will loosen the sand right back up.

the hard corline algae is like rock, it starts as small circles and slowly grows outward, its very colorful, and its tough to scrape off glass.
Wsantos
04/23/2013, 10:07 AM
the crust you are seeing is just the sand stuck together, you can bust it up with a stick or something and it will loosen the sand right back up.

the hard coraline algae is like rock, it starts as small circles and slowly grows outward, its very colorful, and its tough to scrape off glass.

Yes.. Thanks.. I am aware of Coraline Growth, my rocks are full of it but from my understanding Coraline that grows on the sand is hard. Thats how mine was, then the other furry stuff started growing on it... So i was wondering is it CORA or CYANO.. From the feed back, im getting its CYANO. I though CYANO was red. This stuff is the same color as my Coraline Algae.. A pretty purple...
Wsantos
04/23/2013, 10:10 AM
Definitely cyano. Are you using RODI water? What's your routine maintenance? Running any GFO?

RODI yes.. 5 Stage..

Every week 10% water change..

No GFO...

Now this issue wasnt around when I had my GOBY. He leaped out the tank 2 weeks ago. And from that time till now, u see howfast its growing.. But it starts off as a purple crust..
tektite
04/23/2013, 10:10 AM
Cyano can be several different colors, purple/deep red is most common.
Wsantos
04/23/2013, 10:26 AM
Where does it come from? Was my Goby just eating it the whole time? Time when he left the tank, the bottom started crusting. Within 2 weeks!!
MarineGirl411
04/23/2013, 12:41 PM
Your goby didn't eat it. It most likely churned the sand and ate the leftover food that fell to the bottom on your sand. That is why there is a buildup and the cyano is on it now. It is awful stuff. I hate it.
Wsantos
04/23/2013, 12:43 PM
Your goby didn't eat it. It most likely churned the sand and ate the leftover food that fell to the bottom on your sand. That is why there is a buildup and the cyano is on it now. It is awful stuff. I hate it.

Makes sense... But why none on the rocks?
SushiGirl
04/23/2013, 01:08 PM
If you let it go, it'll eventually move to the rocks too.
mikedoyle
04/25/2013, 09:53 AM
cyano
Lpoole
05/24/2013, 05:13 PM
Cyano. if you carbon dose as well it tends to feed cyano.
dlplunkett44
06/06/2013, 12:12 PM
cyano
dlplunkett44
06/06/2013, 12:13 PM
check your phosphate levels, may need to start running gfo