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#1
11-11-2009, 08:38 PM
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Is it possible that you released an ammonia pocket or some H2S by aquascaping? Detail how you set up for an performed the water change. I have nuked a tank before with a bad water change... Could you also detail your system for us. What equipment do you run, what are your water parameters, how old is the tank etc.
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"We shall dive down through black abysses... and in that lair of the Deep Ones we shall dwell amidst wonder and glory forever." - H.P. Lovecraft Old 120gal Tank Journal New 225gal Tank Journal May 2010 TOTM The 10th Annual Prince George Reef Tank Tour 
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#2
11-11-2009, 09:00 PM
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ok my tank is a 72 gallon and been setup for about 2-3 months (I think maybe less)
ok for the water change I remove 2 pails (3 gallons a pail i think) of water and then add 3 buckets over the course of several hours. I always remove the water first the add fresh. I float the new buckets of water in my tank to get them up to proper temp to insure I do not send a cold or hot wave through my tank (reason it takes several hours to do a change) I perform a water change every couple days for I dont have enough time in the day to do the 25%. I always match the salt close to the tank or slightly lower depending on the current salt of the tank. break down remove water fill bucket with fresh add salt add chemicals as needed (i.e. Prime) mix and check again float in tank to get to even temp dump bucket slowly into tank. Water change was done early in the morning finished around noonish my tank is filtered using a Fluval 304. I use a 300W heater to maintain temperature(never turns on for between my condo and the lights its hot... 83 F) I use a powerhead I cant recall the maker but its a 1600L/hr nothing new has been added to my tank since sunday. only my hermit crabs are still alive but dont look good all my corals look good any other questions?
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#3
11-11-2009, 09:06 PM
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one thing I would do is get a pail or 2 set-up to mix your water the day before the water change, use a powerhead & heater... once a tank is set-up and stable, a 10% water change will be enough weekly.
Also it sounds like your tank was really new for that much stock... Sorry for the losses it can be hard to lose that much that quickly.
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#4
11-11-2009, 09:12 PM
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This happened to me one time when my tank was about your age. Everything is fine and one day I wake up and most are dead or breathing heavily on the bottom. The day before, I added a pump and a wavemaker but I think that's just a coincidence. They were one of the hardiest fishes you can get. That never happened to me since then.
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#5
11-11-2009, 09:14 PM
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Quote:
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#6
11-11-2009, 09:12 PM
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I can understand adding new stuff shocking the system but nothing has been added and even being a new system should something not spike or change for water quallity? I just dont understand on why everything was good all day everyone was happy then just to fall over.
I am not afraid of the cost or the time or the hurt feelings im afraid to add new fish for nothing desrvers to die that has not hurt me.
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#8
11-11-2009, 09:18 PM
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Quote:
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#10
11-11-2009, 09:20 PM
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In the first two months anything from adding too much fish to doing too much water change can throw the tanks balance off. You really do have to be careful in the first few months. Did you set up your bathtub with brand new fresh saltwater ? They could have been stressed over a chemical imbalance due to the water change AND rock movement (potentially releasing chemicals), and then throwing them into a tub of newly mixed saltwater did them in. Anyway, that would be my theory. Sorry to hear of your loss.
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