RE: Losing SPS - Help!

[jjwex]

RE: Losing SPS - Help!

I need some advice because my sps are starting to rtn.

My 120 gallon tank's been up and running for a little over a year and my sps were flourishing. Then a couple of weeks ago, i lost a couple of frags and small colonies. It got to the point where I was losing at least one every couple of days.

I had my water professionally tested (like 15 different tests) and while some things tested higher or lower than normal, there was not a single smoking gun, and that includes alkinility, calcium, magnesium, , natrates, temperature and salinity.

I bought a different brand of salt and proceeded to do a 50% water change and that seemed to correct the problem for about a week. But now it's started again. I've lost three more sps in the last three days.

A couple of other things...

- I know it's not my lighting because I just switched out my 20k radiums (I did this after the problem first started, so I know it's not the cause)
- I also just recently bought a grounding plug in case there was an electrical current.

Any suggestions? I'm prepared to do another water change but that didn't help the first time. I'm absolutely at wits end!

 

[snewcrash]

Any metal in your plumbing?

 

[Dustin1300]

Also, what are you water params? TDS reading coming from RO/DI unit?

+1 on metal theory too. I had a cheap heater crack one time and was rusting. Lost some corals before discovering and I use higher end heaters now to ensure it does not happen again. Luckily I just lost a few heads of Frogspawn and Xenia but everything else bounced back as I did some major water changes. Did not have any SPS in at the time but I would not throw them out. I've seen SPS come back from a single polyp

 

[ingtar_shinowa]

Also, what are you water params? TDS reading coming from RO/DI unit?

+1 on metal theory too. I've seen SPS come back from a single polyp

I agree i would try testing for metals and run a polyflitrer

 

[ArtemisGoldfish]

Any pests spotted on the dead corals? Also, are there any deformities such as excess mucus, loose tissue, etc?

If you have the tools, do an examination on a piece that is nearly dead. Then you can begin to see if the problem is chemically, mechanically (other animal) or biologically related.

Were phosphates included in that testing you did?

 

[Norwood IND]

What are your water parameters? Actual numbers would be helpful. How old were the bulbs before you swithced them out?

 

[Dustin1300]

I think the common question is, what are your water parameters?!?