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Old 02/12/2018, 09:03 PM   #1
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ECU_Pirate's Avatar
Join Date: Aug 2017
Location: Raleigh, NC
Posts: 76
Picking up the pieces

Almost a month ago we lost 12 out of 14 fish over the course of a week. I'm still not entirely sure what took them out, but the folks here who responded to my thread thought it looked like brooklynella. (Original thread here:

The last two remaining fish are a Springer damsel and a blue-green chromis. I bought an AquaMedic fish trap, but I haven't spent a great deal of effort trying to trap the fish. Truthfully, after watching almost all my fish die one-by-one, I needed a break from it, so I haven't messed with the trap much. It's sitting in the DT, but so far, the fish ignore it. I'm ready to get things moving again. I know I need to get the fish out and into a quarantine tank in order to let my DT go fallow. But I'm wondering how the parasite could be reproducing and continuing its life cycle if my last two fish remain unaffected. I definitely don't want to introduce a new fish without doing due diligence and letting the tank go fallow. But I also wonder how difficult it's going to be to get these fish in the trap, and I don't want to have to drain my tank to get these last two fish out and into QT. Is there any chance this thing could be in the process of dying off since it apparently isn't hosting on my fish? What would your next step be?

I would appreciate any and all suggestions.

Tank: 150G Marineland, 3 AI Hydra26 lights, Skimz Up39 Sumpro, Reef Oct 150INT Skimmer, Current Eflux DC Pump 1900Reg, Hydor Gen3 2450 Pwrhd Circ Pump, Hydor Smartwave Cont, AquaTop 300w Titanium Htr

Current Tank Info: 150G Marineland
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Old 02/13/2018, 04:36 PM   #2
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Join Date: Nov 2004
Location: Long Island, NY
Posts: 1,097
Fish have tendency of developing immunity to certain parasites and just because there is no visual symptoms visible it doesnt guarantee that the parasite is not there. I would personally take them out, place them in qt and go fallow on the DT for 76 days. Its much easier to do that now with 2 fish left then in the future.
start feeding by placing the food inside the fish trap for a couple of day and get the remaining fish used to eating from inside it and hopefully that might make it easier to catch them.
I personally don't have much experience with damsels but I have read that damsels are terrors and they tend to become extremely aggressive specially the Sapphire Damsel (springer).

300g with velocity t4 for return and a Reflo dart on a closed loop, T5 lights & SRO3000 skimmer.

Current Tank Info: 300g
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