trate levels off the chart.. pls help twitching fish

[ClayWagner]

The sand you have will "seed" as long as it has either cycled or there is some live sand present in your tank. I wouldn't suggest replacing the sand as this will cause even more stress to your fish. Sounds like it's either the Fluval (have been known for gunking up and causing high nitrate/ite), not enough beneficial bacteria, or too weak of a skimmer (seaclone doesn't sound like enough for that much bioload). Don't ever do a 50% water change unless it's an emergency - 20-30% tops. I'd suggest small frequent water changes and maybe a change of some equipment. As far as flow goes, a cheap and very efficient way are the Hydor Koralia's. I have two #3's on my 90 gallon (@35 a piece). They aren't necessarily powerheads because they give an even spread flow across the tank. Maybe I missed, but do you have live rock? Live rock is pretty much a neccessity to reefing and helping stability.

 

[bertoni]

Adding some live rock might help with the nitrate level over time, but it'll need to be very well cured before it's added.

If the ammonia level is zero, I suspect a disease or aggression.

 

[tmz]

I also suspect a disease or aggression. Water quality issues are important and you need to address them but as far as your puffer is concerned figuring out what is ailing it is most urgent.

 

[metancute]

i just wanted to say thx for everyones help!!! although i still have a problem my nitrites are going down & my puffer is getting back his color & breathing better. i think it was the sand all along!! i replaced the sand with live sand & did a 40% water change & added a koralia 4 powerhead & now my nitrates have gone down 2 shades already & are at a "stress" level instead of toxic. i'm hoping that in a couple of days it can all be normal! this is definitely a great message board for advice!!! please wish me luck!!! i think my puffer will make it. are there any other suggestions for regular maintenance?? i'm learning day by day!