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Old 04/22/2018, 10:23 PM   #1
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Bleach smell after cleaning rocks


I'm currently in the process of re-setting up my tank after almost a year. When I had it last, all my rocks had acquired a good amount of green (sitting) algae. To clean it (and potentially kill anything hazardous), I soaked everything in 10% bleach for about 15 min (following instructions I found on the internet). I then rinsed it thoroughly, let it sit in a bucket full of tap water overnight, rinsed again and let it sit in some saltwater for another few hours. Rinsed again and then let it sun-dry. However, some of the rocks still have a light bleach smell. Am I good to put them in the tank (currently cycling) or is it hazardous for any fish that will move in if I can still smell it?

Thanks for any advice.

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Old 04/23/2018, 04:23 AM   #2
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I'd rinse them a few more times then dry them out completely in the sun..

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Old 04/23/2018, 05:01 AM   #3
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I've bleached rocks before. Soak them in RO/DI and prime for a few weeks. I have never used rock that smelled like bleach. I would rinse it longer before using.

80G SCA Build:

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Old 04/23/2018, 05:56 AM   #4
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If the rocks smell like bleach you need to rinse them more like mentioned above.

Fish are not disposable commodities, but a worthwhile investment that can be maintained and enjoyed for many years, providing one is willing to take the time to understand their requirements and needs

Current Tank Info: 625g, 200g sump, RD3 230w, Vectra L1 on a closed loop, 3 MP60s, MP40. Several QTs
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Old 04/23/2018, 12:11 PM   #5
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Prime will neutralize the bleach. It's also good for household use.


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, 2 firefish, 2 chromis, royal gramma basslet, starry blenny, chestnut turbo snails, bristleworms, couple of hermits.
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Old 04/23/2018, 01:19 PM   #6
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Leave them on the SUN couple weeks....all smell gone.

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Old 04/23/2018, 02:42 PM   #7
on the spot
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If you had the time and inclination the RO/sun dried path is what I would choose.

However, getting them in the tank now seems to be in your advantage. For that Sk8r gave the best solution.


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Old 04/24/2018, 01:13 AM   #8
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Thank you all for your feedback!

I have them soaking some more with Prime at the moment and then will let them dry in the sun for a little while longer, as in: a few days.

I will then put them in the tank with more prime.

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