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Old 08-09-2013, 03:56 PM   #1
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Substrate

How does one change the substate in an aquarium? Could it "un-cycle" the tank?
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Old 08-09-2013, 04:04 PM   #2
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I asked that same question yesterday, I had 2 responses. Both said take all the fish out, change the substrate and put the fish back in. Keep some of the tank water so you can add it to the new water.

I want to go with dťcor marbles instead of gravel. However, I read online that if I do that the beneficial bacteria won't have anywhere to live.
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Old 08-09-2013, 04:17 PM   #3
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Oh alright, yea i'm planning on adding sand instead of the gravel i have now, i'm assuming it will work out fine, thank you for the response!
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Old 08-09-2013, 04:17 PM   #4
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You can also just remove some little by little over the course of a few weeks. Won't uncycle tanks as long as filter is good.
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Old 08-09-2013, 04:50 PM   #5
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As long as you don't change your filter media regularly feel free to go ahead and change out the substrate. Any cycle that happens because of it should be short lived and safe to fish.

Just be sure to very thoroughly wash the sand before it goes in.
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Old 08-09-2013, 04:58 PM   #6
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Oh alright, yea i'm planning on adding sand instead of the gravel i have now, i'm assuming it will work out fine, thank you for the response!
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Old 08-09-2013, 05:16 PM   #7
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I just went to change my substrate and i scooped it out and the entire tank filled with cloudy water, i think it was fish poop or left over food, what should i do? Water change until clear?
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Old 08-09-2013, 06:10 PM   #8
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And you might want to swish your filter media around in the tank after you change it.
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Old 08-09-2013, 07:42 PM   #9
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Quote:
Originally Posted by Jyoung2014 View Post
I just went to change my substrate and i scooped it out and the entire tank filled with cloudy water, i think it was fish poop or left over food, what should i do? Water change until clear?
Yeah a water change will clear it up. Gravel collects tons of debris.
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