reef died

knightflyer

Registered Member
Dec 18, 2005
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I have a problem with my reef tank killing all my coral, clams, snails, and dusters. Everything except for the fish and crabs have died. I have a 500
gal system. A 220, 120, and 75 gal tank and a 75 gal sump. I have all the filters a commercial skimmer uv light and ro system. My water tests normal
except for the nitrates are a little high. I use balance blocks, calcium and iodine and feed my coral DT's phytoplankton. I was having problems with algae but now the only thing growing is something black and only in the shade. I guess it's black slime algae but not sure, maybe Cyanobateria.
My clams showed the first signs of problems on a Saturday when they didn't open fully and their edges looked a little rough, sickly. later that day I noticed some of my coral wasn't opening completely. Anyway within three days I had lost everything save a few I took out and placed in a medical tank. Some of those eventually died. Snails especially. I checked for copper and electricity or electrical shock. Someone said maybe chemical warfare between corals, but most of my coral have been together in the same place for a least six months. Oh, my system is about 8 months old, where I converted over from fresh water which was over two years old. I started with my 75 gal and slowly converted it to salt for my fresh water snowflake eels I have. This is getting to be a book, sorry! Anyway, can anyone help I would really appreciate it as would my family (reef dwellers). If you need more info please ask. Thanks!
 
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Knightflyer, you must be feeling really down and I m sorry to hear your having such problems. Firstly we need some info; what are the specific water parameters; Nitrate (and any Nitrite and ammonia readings), Phosphate, Calcium and if you have it Magnesium and DKH. Also your salinity and how often you change your water.

I initially suspect your Nitrates are causing a problem as the critters that are dying are prettry sensitive to any Nitrate reading. Do a water change asap to help lower it (Im assuming your RO water is free from Nitrates).

If we conclude that high Nitrate is the issue then you need to cure it so how are you operating your reef - how much live rock, DSB, cannister filters, refugium etc ?.
 
I suspect its not nitrates which is causing your tank problems. If they were slowly building up its the tank would be acclimating to a higher nitrate level, calms process nitrates anyway (commercial clam culturing facilites actually have to dose nitrates to their system for clams to grow, only becuase there could be hundreds in there). If it was only the nitrates the clams wouldn't be the first to be affected, IMO.

Posting the parameters will help find out whats wrong. What kind of skimmer do you have? Thats alot of gallons, and if theres a predator tank hooked up to the reef tank maybe the waters not getting filtered enough to keep up with the waste?

Alage is caused by phospates... so you could have gunk in your sand or stuck in your rocks, so that could be the algae problem. What kind of lights do you have, how long a day do you run them? I don't understand why the feahter dusters would die either... strange set of events.

Neil.
 
There may be a dangerous hitch hiker in there, try looking around the tank at night with a flash light.
 
How long are the inverts surving in the system? Is this a setup that has been running long term (more than a few months) and crashed or is all new and you are not able to keep the inverts alive?
 
At first blush, sounds like an ammonia spike.

Please post the EXACT readings of ALL parameters (pH, KH, Ca, NH2, Temp, salinity, etc.). Also post what kind of test kit and method your using.

Please also post a detailed list of the tank inhabitants and a timeline of what happened, what you did and when each thing died.

If you've had the tank for 8 months and you say that the corals "had been together" for 6 months, that's quite a compressed time for a full-out reef tank. I didn't add any corals to mine for just over half a year.

Very sorry for your losses!
 
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