A sad weekend

cristhiam

New member
I'm feeling giving up the nitrate battle, nitrate spiked again to about 100+ salifter kit, but this time it was too late to rescue my 4+ year old purple tip acro, some might come back I can see a few good branches, also digitatas are looking bad, not as bad as the purple tip, LPS are some what fine not too much extension but nothing is melting other sps's looks fine, zoas fine, gsp fine, elegance a bit stressed not expanding like before, clams are fine. Orange caps are fine, purple cap a bit bleached, xenia going crazy again. I have many other types of corals that are fine.

I did a 50G water change Sunday and things seem to be better, nitrates are down to 10. The purple tip pretty much got a brown jelly infection and spread all over it.

About the system: 125G + 40G sump, CSS 125, cheato in the sump growing well, PH 7.9 (morning) to 8.2 +/- at the end of the day.
About 60 nassarious snails, about 20+ blue legs, about 15 astreas, some turbos, no HA or any other type of bad algae’s, a bit of cyano around the sand but not crazy. The skimmer is pulling a lot of junk probably from the die off of the acro.

It seems that my DSB has been disturbed by the pistol shrimp and lost the bacteria that feeds on nitrates, the shrimp has tunnels all over it, this is what I think is the problem, the shrimp is about a year old but it's pretty big now.

What I feed to the fish is 2 shrimps a day, I use a feeding stick and it pretty much gone within an hour, a 3x3 inch nori sheet (morning), and 3 cubes of home made frozen food (night). I think the system should be able to handle but I guess not.

Water changes are done 25G every two weeks.

Water parameters are: nitrates 10 (now), calc 400-420, DKH 9, salinity 1.026, phos 0, MG around 1300.

For now I've put my denitrator back online but it takes about 2 months to cycle, I'll add a DSB in the sump, but before all this I might use the sugar method and water changes until the sand bed starts working again.

I need ideas. A picture of my poor purple tip (disturbing)

purpletip.jpg
 
That sucks. Sorry to hear about your troubles, wish I could help but I'm not very good with the chemistry thing. Someone will chime in.
 
How long ago did you add the pistol? When you are running a deep sand bed, it is real important to make sure you do not have deep digging animals in the sand. The Pistol Shrimp will dig and dig.

That kind of disturbance can cause a spike.

Things I would do:

Get that shrimp out.
Lots of water changes.
Test Water Daily.

Sorry to hear about your losses.
 
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I can totally empathize with you, that happened to me aswell and it took a little while for my corals to come back again. Sorry this happened to you, just keep up on the water changes and keep a sharp eye:D
 
I have the pistol close to a year but it's got caves all over the place mainly in the middle of the tank where most of the rock is located, now how do I get it out? :) I think the problem is that the pistol keeps digging and oxigen gets under the DSB and causing the DSB not do what it's supposed to be doing.

On the positive side is that some of my purple tip acro will survive or after I get it all figure it out, I can ask some of you guys to sell some frags back to me :) I have sold and give out free frags to several people that got zoas and some other corals from me :)

I feel better today
 
Hi Cris...sorry to hear about the problem you're having. Here's a link to some great info on the subject.
http://www.wetwebmedia.com/nitratesmar.htm

With the high bioload and intense feeding I do with my reefs, I've found that it's essential to keep the rock clean. Dissolved solids, detritious in the form of uneaten food and fish wastes that gets in and under rock is often the problem. A turkey baster or small power head used to stir these items into the water column for removal, IMO, is one of the most vital elements of good water maintenance. Many folks are shocked at the amount of hidden wastes stirred when doing this...often forming a cloud in the tank. Even with great water flow throughout the tank, there are always some sheltered areas where wastes collect. It's also vital to gently blow off corals, especially zoas and others that have a connective mat at their base and the branches of sps. When food or waste breaks down on living tissue it can cause all types of problems. Keeping these mats clear often offsets bacterial and fungal infections that can lead to the corals' demise.

But, it's also vital to remove the wastes from the system otherwise you'll just "recycle" them back into the tank. Placing some filter pad in an area near where water from the tank flows, then cleaning/or replacing these regularly (every day or so when first getting the bulk out of the tank) is often the key to solving this problem.

In relation to this, you might also want to do some reading on adding an ozone unit and feeding ozone through your protein skimmer. Again, some insight in this link on ozone by Fenner:

http://www.wetwebmedia.com/marphysf.htm

I'm adding ozone to many of my tanks and it'll surely be on the new 210 reef. Hope some of this info helps. Marcye
 
A few thoughts.
I am a DSB fan and have between 5 and 9 inches of sand in my 390. The DSB is typically 3 layers, aerobic on top, anaerobic in the middle and anoxic on the bottom. To prevent disrupting the DSB function, I (with the help of a great group of local reefers) put down about 4 inches of sand then 2 layers of not metalic window screen, and then 2 layers of eggcrate, and then the rest of the sand. It does two things...first it keeps the rocks from sinking into the sand, and second it keeps burrowing creatures in the aerobic layer of the DSB where they can do no damage to the function of the DSB.
I believe your shrimp is damaging the function of the DSB. I would remove it.
I believe you are feeding real close to the too much line for the size of your system.
A good rock cleanup might do some good. Do you have a system for randomizing your flow?
 
Well pretty much all the acro died an just a couple of small 1 - 2" braches survived. Nitratres are at about 10 now, I'm using sugar just until I can get the shrimp out and the system starts working again. Everything is looking good acan frags are looking puffy again and dendros all the way out, elegance it's looking very good, over all the tank is looking good and no more die off. I'll take couple of pics
 
Purple cab recovering
recover1.jpg


Digitatas are still not looking good, but the RTN has stopped.
recover2.jpg


Not sure what sps is this one but the RTN stopped.
recover3.jpg


The 2 surviving branches
recover4.jpg
 
Froggie
recover5.jpg


Looking good again
recover6.jpg


Elegance
recover10.jpg


You would think at about 12" this guy will suck up some nitrates faster
recover9.jpg


And the middle of it
recover8.jpg
 
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