uh oh

[tgoeujon]

the tank is a 55 gallon, been up and running for approx. a year and a half. sand bed is 4" deep. i change 10 gallons every 2 weeks ( instant ocean). i dose with iodine, coral accel, strontium and molybdenum, purple up, liquid reactor, i stick to dosing instructions on the bottles. i lost a regal tang, yellow tang, 6 line wrasse, 2 chromis, blue devil, yellow damsel, domino damsel, saddled toby puffer, diadiem dottyback, black percula and salarias blenny. parameters are salinity 1.023, ammonia 0, nitrites 0, nitrates 5, ph 8.2, temp 80

[banditpowdercoat]

Whoaa dude, killed all livestock??? Dayum. Hope you find the cause, I havnt gto any ideas

Come to think, you added 2 powerheads. Wonder if there was anything on them? Oil or plastic mold release residue? Params seem ok. 4 year old tank so pretty stable I presume

Sure you want more Zoo's right now?

[tgoeujon]

i cleaned the koralias pretty well first. i just dont understand what would kill the fish and not even phase the corals or inverts. definately want the zoos

[Der_Iron_Chef]

What inverts do you have?

[Jason McK]

Really Zero Nitrates with all that fish.
Have you ever tested your tank for the levels of the addatives you are adding? Most of them contain trace elements of something else you where adding. I would imagine your trace elements are over the safe levels.

Sorry to hear your losses


J

[24storm]

With a 4" sand bed and adding the power heads how much did you disturb the sand. When did you do your testing? before the lose or after? If it was before how long before you added the new power heads? My guess is you release a lot of stuff in the sand bed.

Keith

[Reefhawk1]

Is it possible you had a nitrate spike? you have a reading of 5 is this normal for your tank?

When you changed your power heads did the flow increase disturb the sand bed?

[brizzo]

Originally Posted by tgoeujon

i dose with iodine, coral accel, strontium and molybdenum, purple up, liquid reactor, i stick to dosing instructions on the bottles.

Originally Posted by Jason McK

Have you ever tested your tank for the levels of the addatives you are adding? Most of them contain trace elements of something else you where adding. I would imagine your trace elements are over the safe levels.

You must test trace levels if you're going to be dosing!

[fkshiu]

That's a lot of trace elements you're dosing. You're LFS must be happy -

While I do agree it was probably an ammonia spike from the anemone dieing, certain trace elements can be toxic in elevated levels. Others are correct: you shouldn't dose if you aren't testing for that specific thing regardless of what the bottles say.

You should have to dose half the periodic table in any event if you are doing regular water changes.

[justinl]

Originally Posted by tgoeujon

the tank is a 55 gallon, been up and running for approx. a year and a half. sand bed is 4" deep. i change 10 gallons every 2 weeks ( instant ocean). i dose with iodine, coral accel, strontium and molybdenum, purple up, liquid reactor, i stick to dosing instructions on the bottles. i lost a regal tang, yellow tang, 6 line wrasse, 2 chromis, blue devil, yellow damsel, domino damsel, saddled toby puffer, diadiem dottyback, black percula and salarias blenny. parameters are salinity 1.023, ammonia 0, nitrites 0, nitrates 5, ph 8.2, temp 80

well personally i think it was overstocked, but that probably wasn't the reason. at least not directly. Did you notice any parasites or disease symptoms? overstocking stress might have made them more vulnerable to a fast acting pathogen of some sort.

do you test for what you dose (and my, what a list you have there) or just follow directions on the bottle? what do you test your salinity with? hydrometer? refractometer?