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Hi there ya all!

This may come as very dumb question but still I have to ask. Explanation comes frist though. I want to add some more bags of crushed coral to my hob filter and already have a bag that was left when I took apart my tropical aquarium. There I used it as gravel to cover the bottom. The one that I didn't I use I have converted in filter media. So the question is: can I use the coral that has been in my tropical tank or this is a bad idea and I should by new one? Should I boil it to sterilize it and be able to reuse it?

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How long was the crushed coral in your tropical tank? Are you using it to stabilize ph or as biomedia?

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How long was the crushed coral in your tropical tank? Are you using it to stabilize ph or as biomedia?

Hi Fantailfan1,

I use it to stabilize pH and it has been in the tropical tank for about 2,5 years.

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As I understand it, crushed coral needs to be replaced every 4-6 months when used to stabilize pH.  :idont  I think it loses it's effectiveness over time . . . . 

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Lisa, I can't find any suggestion that crushed coral loses effectiveness.  I suppose the particles could develop a thick biofilm that could inhibit the rate at which it dissolves. I checked the manufacturers to see if they recommended periodic replacement, and they don't.  Since they make money on replacement,  I tend to believe this.

 

I do worry about the safety of reusing crushed coral from another aquarium, although boiling should sterilize it.

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crushed coral over time will dissolve in the water.... Over time it will loose its Ph effectiveness but this will take a long time... We used to believe that it will go down fast like over 6 months. But I have found it doesnt, its still there.. It does erode in the tank over time, this I have seen.

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So should I boil it or just throw it away and buy new one?

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crushed coral over time will dissolve in the water.... Over time it will loose its Ph effectiveness but this will take a long time... We used to believe that it will go down fast like over 6 months. But I have found it doesnt, its still there.. It does erode in the tank over time, this I have seen.

Koko by "erode" do you means it gets yellowish and rusty like?

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crushed coral over time will dissolve in the water.... Over time it will loose its Ph effectiveness but this will take a long time... We used to believe that it will go down fast like over 6 months. But I have found it doesnt, its still there.. It does erode in the tank over time, this I have seen.

Koko by "erode" do you means it gets yellowish and rusty like?

 

 

No it wont do that.. Erode as like when you see a river Erode a bed away... Just washes down.. become crumble I guess you can say :)

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crushed coral over time will dissolve in the water.... Over time it will loose its Ph effectiveness but this will take a long time... We used to believe that it will go down fast like over 6 months. But I have found it doesnt, its still there.. It does erode in the tank over time, this I have seen.

Koko by "erode" do you means it gets yellowish and rusty like?

 

No it wont do that.. Erode as like when you see a river Erode a bed away... Just washes down.. become crumble I guess you can say :)

Ah, ok. Turn into sand like. No nothing like that has happened.

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