Sps colony receding at base

RDMike · 12/01/2009, 07:07 PM

Hi guys,

I have a problem with one of my sps colony. Last fri, I noticed a section of it was dead when I came home from being 1 week away. This section can be seen on the top left side of the colony.

Now the base seems to be receding. All other 50+ sps are okay. My tank is a 75g, with 4 6045 nanostreams. Im thinking it might be a flow issue, so I pointed a stream at it. Could it be any other issues that could be causing this? Thanks

Tank parameter:
salinity 1.025 (refractometer)
Alk - 8.3
Ca - 450
Mag 1290

butts182 · 12/09/2009, 03:53 PM

maybe flow or hungry critters

Stanley-Reefer · 12/09/2009, 07:20 PM

IME and with pocci like that as well as BOP it seems to grow too dense for the light to get to the base. I see some towards the top of your colony at the overflow though.

d-man · 12/09/2009, 08:35 PM

my birdsnest looks the same but that is due to lack of light at the bottom of the BN. Yours might be a stn issue , unless the back of that pocci is not getting light either. Did the color fade over time or just all of a sudden bleach in that area?

fishnut321 · 12/09/2009, 08:37 PM

Try pushing some flow down against that overflow, i bet your just not getting enough since it started filling out and shading over.

Bullredchaser · 12/10/2009, 11:36 PM

Check at night with a flashlight to see if a gorilla crab is going to town on it.Make sure to check sporadically if you see a hairy crab kill it on the spot.

12/01/2009, 07:07 PM	#1
RDMike Moved On Join Date: Sep 2009 Location: Chicago near UIC Posts: 272	Sps colony receding at base Hi guys, I have a problem with one of my sps colony. Last fri, I noticed a section of it was dead when I came home from being 1 week away. This section can be seen on the top left side of the colony. Now the base seems to be receding. All other 50+ sps are okay. My tank is a 75g, with 4 6045 nanostreams. Im thinking it might be a flow issue, so I pointed a stream at it. Could it be any other issues that could be causing this? Thanks Tank parameter: salinity 1.025 (refractometer) Alk - 8.3 Ca - 450 Mag 1290

12/09/2009, 03:53 PM	#2
butts182 Moved On Join Date: Dec 2009 Location: Lake Park, FL Posts: 121	maybe flow or hungry critters

12/09/2009, 07:20 PM	#3
Stanley-Reefer Registered Member Join Date: Dec 2008 Location: Stanley, NC Posts: 1,933	IME and with pocci like that as well as BOP it seems to grow too dense for the light to get to the base. I see some towards the top of your colony at the overflow though.

12/09/2009, 08:35 PM	#4
d-man Registered Member Join Date: Nov 2009 Location: San Diego, ca Posts: 2,732	my birdsnest looks the same but that is due to lack of light at the bottom of the BN. Yours might be a stn issue , unless the back of that pocci is not getting light either. Did the color fade over time or just all of a sudden bleach in that area?

12/09/2009, 08:37 PM	#5
fishnut321 Registered Member Join Date: Dec 2005 Location: Warrensburg, Mo Posts: 763	Try pushing some flow down against that overflow, i bet your just not getting enough since it started filling out and shading over.

12/10/2009, 11:36 PM	#6
Bullredchaser Registered Member Join Date: Aug 2003 Location: Dr Phillips Posts: 1,229	Check at night with a flashlight to see if a gorilla crab is going to town on it.Make sure to check sporadically if you see a hairy crab kill it on the spot.