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Beans21
07/04/2014, 10:16 AM
So my tank isn't that old at 2 months. But my parameters were all good before I added anything to it I add 2 snowflake clown fish 7 days ago

Now one of them is on the verge of death and the other one is OK for now. My ammonia and nitrites spiked. I did a 5g water change on monday and another last night ( this time from an established tank). I still think I'm in trouble because the levels barely went down

Any suggestions. I hate to see my clown fish die

My tank is a 20g AIO. 10-15pds of dry rock that I cleaned for a week. 20pds of live sand, and 10pds of established rock in the back and carbon in the back (no skimmer)

Nothing else is in the tank but 2 mushrooms

Before putting the fish in my levels were good

scuzy
07/04/2014, 10:21 AM
Was tank fully cycled?

slief
07/04/2014, 10:27 AM
I wouldn't consider this a crash by any means. You have a new tank and with that comes the likelihood of casualties. Also, often new fish don't adjust well to being moved from wholesalers to fish store to a new tank. The stress of all that often results in their untimely death. Especially when moved into a new system that is not well established. Not sure what a spike is to you but with all that live rock and sand, two small fish causing a spike leads me to wonder if something else in the rock died or if your rock wasn't fully cured. That or you are overfeeding for the amount of beneficial bacteria in the system. Since you didn't have any bioload, the beneficial bacteria in your tank would have been at a minimum. It tends to build up as the tank matures and the bioload increases.

At two months old, with these being the first fish you could also are likely experiencing a bit of a cycle. I normally prefer to test a new tank with damsels since they are a bit more hardy and will help with the cycle. Others use the piece of shrimp method but a damsel or two is a great way to insure your system is healthy enough to support life. Once I feel comfortable I will either remove the damsels or leave them in the system. Yellow tail blue damsels are usually model citizens and as such are my first choice for fish to cycle and or test the waters with.

Also, when doing a 5 gallon water change on a 20 gallon system, I hope you are matching the water temp and salinity so you don't cause additional stress on the fish from a major temp swing or change in salinity. The temp change however would be my biggest concern. If you are matching those, then I think you are taking the right steps and just need to be patient and know that loosing new fish introduced into a new unestablished system is unfortunately all too often par for course.

triggreef
07/04/2014, 10:35 AM
also make sure that you are letting the new water mix for at least 24 hours as it can burn their gills if you use new water that is not fully mixed yet.

look into quarantining everything it will save a lot of money and grief in the long run.

Beans21
07/04/2014, 10:50 AM
I did the shrimp approach and made sure of the salinity and temp were the same. I also made sure the first water change was mixed for 2 days before I added it

I also didn't feed them the much. Maybe 2-3 flakes in the morning and the same at night everything was always eaten

I've had saltwater tanks in the past and never had this issue only in my freshwater

This sucks possibly losing 2 black snowflakes.