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Old 01/10/2008, 06:41 PM
fishox fishox is offline
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Join Date: Jul 2004
Location: Pittsburgh PA
Posts: 369
softies not opening

I have a hammer coral and a goniopora that aren't opening. This has been going on for about two weeks. The only real change to the tank is that I added some Koralia powerheads. Could the increased flow/new flow patterns be the cause?

My parameters are fairly stable at:
Ammonia and Nitrite at 0
Ph 8.4
Ca 300
Kh 7.4
Phosphate 0
Nitrate was up a little at 10. My tank has never tested 0 it is usually at 5

I use Salifert kits. the only dosing I do is B-Ionic. I use RO/DI water that I test with a TDS meter. Reading is 002

I also have a grounding probe so I really don't think it is stray voltage.

Both of the corals are about 2 yrs old. The hammer coral has grown from 4 heads to 12. The goniopora hasn't done as well but until just recently always had big old "tentacles" sticking out.

Any suggestions?
Old 01/10/2008, 08:17 PM
Agu Agu is offline
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Join Date: Oct 1999
Location: Venice, Florida
Posts: 15,230
First of all both corals you mention are considered LPS, Large Polyp Stoney corals. And neither of them appreciates high flow if you want them to fully expand.

So yeah the increased flow is probably the issue.
Less technology , more biology .
Old 01/12/2008, 12:24 AM
Lotus99 Lotus99 is offline
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Join Date: Oct 2006
Location: Southern California
Posts: 721
Your KH and calcium are low, too.
"So long, and thanks for all the fish"
Old 01/12/2008, 12:34 AM
demonsp demonsp is offline
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Join Date: Jul 2006
Location: el paso tx
Posts: 3,651
These are calcium dependent coral and like medium flow. Plus they may not recieving enough food with added flow.Maybe feed more or turn off during feeding. Also with such low calcium you may want to increase amount or how often or both of the water change scedule. Heres a Coral care site that may help.GL
Lance H.

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