Fish Dying and Most Corals Thriving

ScubaGal04

New member
I have a 55 gallon tank. I have kept fish only before, but this is the first time I have kept coral and fish. This particular set-up was established 11-17-2015. On 3-31-2017 something diasterous happened. I woke-up and had 2 new Mandarins purchased 3-18 & 3-25 (I realize now my tank was to new for 2), a Kole Tang purchased 1-19, a Flame Angel purchased 1-19, a Watchman Gobbie purchased in the beginning, and a Saddle Valentini purchased 1-2. I had a Sailfin Algae Blenny that has been missing for weeks. I went and purchased a hospital tank and placed my 4 clowns, 2 PJ Cardinals, 2 Chromis, and Yellow and White Wrasse into it.

Ammonia .25, Nitrite 0, Nitrate 60, PH 8.4, Allallinity 10, Calicum 500, Magnesium 1400, Salinity 1.30

I did a 10% water changed, a few days later I did a 20% water change, and a 2 weeks later I did a 50% water change not wanting to destroy my bacteria. My water was testing almost perfect so I reintroduced my my PJ's back into the aquarium. They passed away within a matter of hours. They passed away during the drip acclimation process when trying to put them back in the smaller tank. They were acting lethargic and gasping for breath.

Ammonia 0, Nitrite 0, Nitrate 20, PH 8.3, Allallinity 11, Calicum 480, Magnesium 1200, Salinity 1.027

My Anemones, Candy Cane Coral, Yellow Finger Gorgonian Sea Fan and Red Montipora are doing great. My Xenia, Kenya Tree, Zoanthids, Blastumussa, Acan, and Duncan are staying most closed. I moved the Blastumussa and Zoanthids to the smaller tank and they are opening more and doing better. I have a Ponape Birdnest and my Seriatopra Birds of Paradise that have turned white (bleached), but is still growing. My Red Planet is not really grown or been bleached.

I get a tingling sensation when I put my arm in this tank now. I think that is all. I know my tank was overstocked, but I had stepped up my 10% water changes and vacuuming.

Oh yeah. My long hair green algae in abundant, so I placed 5 Emerald Crabs, and 4 Red Scarlet Hermit Crabs in the tank and they are doing fine along with my Horseshoe crab purchased 2-9 and my Conch Snail purchased 12-16-15.

The LFS no longer has any suggestion so any help will be appreciated. I have been running a poly-filter and it has turned tan indicating organic matter.
 

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Tingling sounds like stray voltage. They make meters to test for it. Check your heater for cracks or submersion. Some can take it, some can't.
 
its a heater that's broken, check that first, just unplug the heater and pull it out and check. really simple and less frustrating than using a meter.
 
I agree it's likely stray voltage.


Also just a note, a 55 is too small for 2 mandarins without supplemental feeding. Also horseshoe crabs are better left in the ocean imo

good luck
 
Get a grounding probe! Its always safe to have one in the main display if possible or wherever your pumps/heaters are.
 
On 3-31-2017 something diasterous happened.

On a bright side, because this is going to happen on 03/31/2017 (next year) you can just buy a different heater and none of your fish will die.
 
I took care of a tank, an old school red sea reefer, that had a Kenya tree go sexual, killing all the fish and inverts in the tank. After you check for stray voltage and get a new heater, consider giving your Kenya a good pruning. Once they get to a certain size they can start dropping little clones and multiplying super quick.
 
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