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Old 02/12/2018, 07:00 PM   #1
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Location: Corona, CA
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Exclamation Need advice on how to literally clean poison from tank

Hello, hoping for some good advice here with a potentially bad problem.
So I getting ready to tear down my 120 tank to replace it with a glass tank. (Also I really need a aqua scape remodel)
In preparation for this I bought a couple 20 gal tanks used from LFS that going out of business. I built a double high stand in my garage for the 2 tanks with room under for a sump also.
I had this setup running great until one of my unsupervised 7 yo twin boys decide to make their own addition to the system. One of them tossed a container of amoro ant blocker (itís this granular ant killer stuff that actually works good for ants ) i wasnít open but I know it got in the water because the container filled with water. Apparently the active ingredient is Hydramethylnon 0.88%.
My question here is how would you guys try and clean this??? Is it possible to feel ok about this setup again??? Should I just be tossing the hole thing out??? (The setup, not the kids)
Any advice would be great.

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Old 02/12/2018, 07:12 PM   #2
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I doubt if anything is seriously wrong. You could run carbon do a 100% water change if it makes you feel better. Or tear them down, clean with bleach and fill back up.

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Old 02/12/2018, 11:03 PM   #3
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Thanks I’m thinking the bleach route and running carbon for a while after.
Maybe cycle it with a damsel like a canary before I put all my corals and fish I care about in.

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Old 02/13/2018, 12:11 AM   #4
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As far as poisons go it's pretty mild unless you're an ant or a roach. LD50 on rats is like 1000mg/kg.

I would just do a water change and run carbon. I doubt anything will come of it.

Bleach oxidized organics. I don't see what it would do for poisoned rocks.

Hobby Experience: 9200ish gallons, 26 skimmers, and a handful of Kent Scrapers.
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Old 02/15/2018, 03:08 AM   #5
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Thanks again for the advice. Fingers crossed my new tank will be here in 2weeks so I’ve got to get this thing going so I can start braking down my 120

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Old Today, 03:59 PM   #6
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Glass and silicon absorb very little. That's why glass at least, is used in every chemistry lab ever.

A surface cleaning of the tank should be sufficient. Running carbon is just icing on the cake.

I'm unclear what your rock status is. Rock can absorb nasties.

Some days it's not even worth chewing through the restraints.

Current Tank Info: 250g starphire: 72x28x30, Herbie drain, 4 inch DSB, 3x Reefbreeders Value LED fixtures, SWC/MSX 300A skimmer, Geo kalk reactor, 3 Vortechs w/bb, carbon reactor, and a RKL
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Old Today, 04:51 PM   #7
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Rock and sand---I'd discard. If glass, I'd fill and empty several times plus run PolyFilter to see if it's picking up any residue. I've looked up the chemical and gotten nothing specific: apparently it can get into water, which is why I recommend the soak and flush---and I'd also add a heater to the water and elevate the temperature to 85: chemistry moves faster at higher temperatures, and if it's going to go into the water, that would encourage it. You might also ask Bertoni in the Chemistry forum. Maybe the lads can help you fill and empty.


Salinity 1.024-6; alkalinity 8.3-9.3 on KH scale; calcium 420; magnesium 1300, temp 78-80, nitrate .2. Ammonia 0. No filters: lps tank. Alk and cal won't rise if mg is low.

Current Tank Info: 105g AquaVim wedge lps reef: 3 firefish, yellowhead jawfish, yellow watchman, 3 chromis, tailspot/starry blennies, pink margin fairy wrasse, mandarin, kalk, radion pro, gyre, Eshopps s-200 skimmer, basement sump.
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