Reduction of rock

kevan · 01/06/2012, 02:45 PM

I have just removed half my rock from tank ,(all rock is still in system just moved to sump).
My problem seems to be red Algie on every thing .
System is 900 litre this is including sump.
After rock removal I removed most of sand cleaned in the tank water and returned .
How is this increasing my algie problem (cyano bacteria)
Tank is 1400x 700 deep by 750 wide.
Have two 250 halides and one actinic tube.

kevan · 01/06/2012, 04:11 PM

i'm trying to sell live rock but if not sold how long should I leave in sump before reducing slowly ?
System has been running for several years.

r-balljunkie · 01/06/2012, 08:25 PM

take the rock and throw it in a large trash can, with seawater. cover, no light and pump.

the algae will disappear from rock in a week or so....hopefully.

c

kevan · 01/07/2012, 12:53 PM

The algie is in display tank and on SPS corals and all over sand ,clean sand and is back same day

ForSaleByAndy · 01/07/2012, 04:13 PM

Water changes and stop feeding for a while to let the cyano die out.

errattiq · 01/07/2012, 05:39 PM

You may have stirred up some nutrients from moving around/removing the sand without a doubt. Leave whatever sand you have left alone and do some water changes, 20% daily for about 2 or 3 days, if possible. 30-40% water change at once if not possible to do it on a daily schedule. My percentages may seem high but if SPS and other coral are in jeopardy you dont want to mess around and leave the nutrients in the tank.

01/06/2012, 02:45 PM	#1
kevan Registered Member Join Date: Mar 2004 Location: new zealand Posts: 116	Reduction of rock I have just removed half my rock from tank ,(all rock is still in system just moved to sump). My problem seems to be red Algie on every thing . System is 900 litre this is including sump. After rock removal I removed most of sand cleaned in the tank water and returned . How is this increasing my algie problem (cyano bacteria) Tank is 1400x 700 deep by 750 wide. Have two 250 halides and one actinic tube.

01/06/2012, 04:11 PM	#2
kevan Registered Member Join Date: Mar 2004 Location: new zealand Posts: 116	Help with rock reduction i'm trying to sell live rock but if not sold how long should I leave in sump before reducing slowly ? System has been running for several years.

01/07/2012, 12:53 PM	#4
kevan Registered Member Join Date: Mar 2004 Location: new zealand Posts: 116	Red algie The algie is in display tank and on SPS corals and all over sand ,clean sand and is back same day

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01/06/2012, 08:25 PM	#3
r-balljunkie Registered Reefer Join Date: Jun 2007 Location: Doha, Qatar Posts: 2,059	take the rock and throw it in a large trash can, with seawater. cover, no light and pump. the algae will disappear from rock in a week or so....hopefully. c

01/07/2012, 04:13 PM	#5
ForSaleByAndy Registered Member Join Date: Jun 2009 Location: Livonia, MI Posts: 128	Water changes and stop feeding for a while to let the cyano die out.

01/07/2012, 05:39 PM	#6
errattiq Registered Member Join Date: Dec 2007 Location: Somerset, MA Posts: 91	You may have stirred up some nutrients from moving around/removing the sand without a doubt. Leave whatever sand you have left alone and do some water changes, 20% daily for about 2 or 3 days, if possible. 30-40% water change at once if not possible to do it on a daily schedule. My percentages may seem high but if SPS and other coral are in jeopardy you dont want to mess around and leave the nutrients in the tank.