Losing Corals Quickly

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zromano

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So not in a great position right now and hopeful that I can get some insight. I'm currently operating a 32g biocube and have enjoyed it for the most part - ready to go bigger and should have started that size to begin with.

To date I've lost an acan and am quickly (if not already) losing my torch coral. I have a hammer coral that's struggling, a blasto that's doing ok but still not looking great, a leather that looks perfectly fine (because it's a leather), a mushroom that's hurting a bit but looks ok, and a monti that's doing half decent but the polyps are a bit retracted. I also have a scoly and he's looking extremely rough - i.e. tentacles on the edges are showing.

Let me walk you through how I got here. My tank was low in salinity and I was battling what I thought was a GHA problem. It turns out to be some other type of algae issue (can't remember off the top of my head, bear with me here) and I picked up reef flux. I pumped enough reef flux in as prescribed to clear up the algae problem but still have been having the salinity issues. To me, no other parameter issues seemed to exist other than salinity. Over the past week I have been doing 1 gallon water changes with high salinity water to right size my salinity level over a 7 day period. Salinity was close to where it should have been as of Monday (8 days since the change).

Some of the algae has begun dying and I am hopeful that I will see more in the coming days. I'm working to remove this by hand. However, when I lost my acan today I began to think it's a problem aside from salinity. My torch was completely retracted to that point that some nuisance algae began growing on its sides. To fix this I took my dropper and slowly sprayed it off to remove the algae (while it was in the tank, using the dropper to create some flow). One of the little green heads floated away when this occurred. I did something similar to my acan (which was partially still colored, partially bleached) and the colored portion of it began floating away causing me to obviously freak out.

I'm a little concerned now and want to stop the bleeding before it gets too much worse. Any ideas on what this could be/how I could remedy it? I have a home testing kit for water parameters so you'll have to bear with me as I collect this data, post it here, and give +/-'s. Any advice would be much appreciated!
 
Whats the salinity at?
I had a similar problem and doing several large water changes helped as well as running carbon
 
1.025 is my salinity now. Can't add the carbon back because it will mess up the reef flux which I need to offset the bad algae.
 
Would make sure your getting a correct SG reading. By having a LFS test or local reefer.

Agreed, was a bit concerned with that too. Grabbed some RO/DI water from my LFS before the water changes to make sure I was right on. Worst case I'm +/- 0.01 but will double check with LFS on Monday.
 
you need to verify your salinity and make sure your salt mix is supplying enough macro elements for the corals to survive.
your salinity is the base reading you should be going by to make sure all your macro and trace elements fall in line with the salt being mixed at at certain concentration.

your nutrients (nitrate and phosphate) are bottomed out which coral need in the water to survive.
i didnt see your alk level posted but alk, calcium and magnesium should all be properly maintained in a harmonic balance.

also your photo period being too strong and too long can have a bad adverse affect on corals with bottomed out nutrients too.
 
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I am quick to jump on low/no nutrient but only in an algae free tank. I am going to guess there is nutrient in the system if you are treating for algae. Were you treating for bryopsis perhaps?

Anyway, some questions:
a) age of system
b) how long have these corals been in there and how long were they OK?
c) Good on you for raising Sg slowly, but how low did you get?
d) Lets get some tank pics

I've seen low salinity wipe out a ton of stuff before, but I have also seen perfect recoveries from 1.015 so...

Your ALK is fine, but Ca is low for LPS to stay happy.
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

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