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#1
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Put one of those color-changing Poly Filter pads in the system and see if it turns any colors.
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#2
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There was a problem with some carbon, but that was a couple years ago.
http://www.advancedaquarist.com/blog...or-reef-carbon I think a couple of people here on Canreef ran into that.
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Reef Pilot's Undersea Oasis: http://www.canreef.com/vbulletin/sho...d.php?t=102101 Frags FS: http://www.canreef.com/vbulletin/sho...d.php?t=115022 Solutions are easy. The real difficulty lies in discovering the problem. |
#3
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Could it be something in your tank releasing toxins (ie. Sea cucumber, injured fish) I've read on Reef Central about people who were having mystery die off and it was found to be an injured critter releasing low enough lvls of toxins to not affect fish/inverts but could hurt coral.
It's a long shot in the dark and I've looked but I can't find the article on Reef Central to link
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My aquarium is nothing but a smorgasbord for my cats..... |
#4
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And no, no calcium reactor. I've always dosed a three part mix and switched to the tropic Tropic Marin 3 line after this all went to h*ll in March. I thought I had brought it back to basics when this all started, but without dosing my alk drops to deadly levels in 48 hours, and without pellets my nitrates just keep going up. I'm not sure where they'd stabilize, but it was going to be in the many tens of ppm for sure. Quote:
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#5
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I think your spot on with the ALK... A swing from 5.5 to 8.5 is pretty big within a couple of weeks. My tank went from 6-8 and I lost several colonies and almost all growth tips were burnt. I opted to stick with reefers best and reef crystals salt due to the low ALK in the mixture. Fluval is very high in ALK which was my problem.
On a side note, I would do some calculations on how much you should be dosing and measure to ensure it's dosing the right amount. After messing with dosing for a couple of months, I dropped it and picked up a calcium reactor. I would never do an SPS tank without one again. |
#6
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My alk recently went south and I raised it from about 4 to 8 over a few days, no issues with anything burning. Not sure I'd blame alk.
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Brad |
#7
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Gfo also messes with your alkalinity not a huge amount but it drops a bit , Randy has it noted and how much roughly it pulls out, this is a concern to sps guys who keep low alk or carbon dose.
I lost most my sps a while back remember to a alk overdose , the climb from 6-9 dkh resulted in rtn and then I pulled the doser the drop caused me as much harm as the raising did. The cow fish is a concern too I would think. Do you make your own food? If so Is it Possible that something changed and maybe contaminated?
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#8
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Sure does seem like something is leaching (or accumulating) in your water. It was corrected for a while with massive water changes, and then came back. You could try the massive water changes again, to see if again that fixes it, at least for a while.
Meanwhile, would keep testing your water. Not sure if our standard copper water tests are granular enough at the low range, but might be worth doing if you have them. Alk swings are not good, for sure, but hard to believe it would cause RTN to that extent though, and so suddenly. I have had swings between 7 - 9, but no effects that I could see. And hope you are past that hydrogen sulphide stuff with your pellet reactor. I definitely don't like the recirculating types. As others have said, would ditch that for a while, too, until you can figure out what is going on. Your higher phosphates are not good either, but again, shouldn't have caused the sudden RTN, I don't think. Anyway, keep us informed on what you find. We all want to learn from this, if we can.
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Reef Pilot's Undersea Oasis: http://www.canreef.com/vbulletin/sho...d.php?t=102101 Frags FS: http://www.canreef.com/vbulletin/sho...d.php?t=115022 Solutions are easy. The real difficulty lies in discovering the problem. |
#9
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Ive been watching a tank (established for years) do what your is doing since they added biopellets. all sps are receding. what brand are you using?
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#10
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why would "sps guys" purposly keep a low alk tank, alk is one of the main building blocks in coral growth, if anything we would tand to keep it higher.
I agree with Brad, that swing over weeks isn't a factor, but what was you max alk level or do you know. I have seen big tanks done in by Alk burn but it wasn't realy fromt he level just going to high, but rather the Alk up powder not being mixed properly and landing on the corals. kinda looks like the tips start to melt and get stringy. I tried to find some pictures of the sump/dosing set up you have to see the locations you add your stuff, but couldn't find any. you young kids put so much stuff into your tanks now days it makes it hard anyways, GFO, Bioballs, ect.... also another thing is temp, it will do the same thing, have you had any spikes laitly? here is a pic of what temp did to my tank years ago it started out with just the tips like an Alk burn then the rest started slughing off here was the end result. this bucket is 24" accross this one is 36" accross Steve
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*everything said above is just my opinion, and may or may not reflect the views of this BBS, its Operators, and its Members. If cornered on any “opinion” I post I will totally deny having ever said this in a Court of Law…Unless I am the right one* Some strive to be perfect.... I just strive. |