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Crushed Coral Quantities


Squik

Just a bit of info I gleaned from an old fish-expert down at the LFS.

When using crushed coral to raise pH, follow these simply rules:

1) Use 1/2 cup of crushed coral per 20 gallons

2) Wash it THOROUGHLY before using it

3) Put it in a bag/stocking and place it in your filter. At first it needs to be 'filtered through' flowing water to work well. Once your pH has balanced, you can scatter it through your substrate if desired or leave it in the bag.

4) Crushed coral only raises the pH until it hits 'equilibrium' - being between 7.4 & 7.8. Once it hits that, it is rock solid and will not change.

5) It takes 2 - 3 days for the coral to work, leave it a week to be safe.

6) Once you use the coral, you never have to redo it - it will stay balanced. If your pH starts to drop, the coral automatically adjusts it by releasing more calcium. Your pH will NOT rise above the equilibrium either.

7) Don't let your LFS kid into thinking crushed coral is 'special and expensive' - it's just marine tank substrate... nothing more.

8) You can also use a shell from the beach/seaside. Be careful of ornamental ones, they may have been bleached - they will leach bleach and KILL your babies :(

9) Boil any shells you find on the beach for 30 minutes. A couple of palm-sized ones or a handful of smaller ones equals 1/2 cup of crushed coral.

10) When doing water changes of 50% or over, leave 2 tablespoons of coral in your bucket in a bag (can stay there always) for leaving your water out over night.

Amazing what info you can get when you smile sweetly :D

Oh... if anyone in Australia needs a couple of cups of crushed coral... I ended up with a 5kg bag (doh!) I will gladly mail some out for a couple of dollars just to cover postage.

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I'm a pin-up girl... woo hoo ;)

Just a bit more info:

If you can't get crushed coral, smashed up oyster or scallop shell is just as good and is basically available world wide. Again, boil and scrape them thoroughly. **Avoid mussel shells though**

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when useing sea shells can u use oyster shells? along with clam shells? is there any shell to stay away from?

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when useing sea shells can u use oyster shells? along with clam shells? is there any shell to stay away from?

Not that I know of. I have whelk shells in both my tanks now. They aren't crushed but the are dissolving quickly so they also help to buffer.

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when useing sea shells can u use oyster shells? along with clam shells? is there any shell to stay away from?

Not that I know of. I have whelk shells in both my tanks now. They aren't crushed but the are dissolving quickly so they also help to buffer.

okay thanks =)

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Just a bit of info I gleaned from an old fish-expert down at the LFS.

When using crushed coral to raise pH, follow these simply rules:

1) Use 1/2 cup of crushed coral per 20 gallons

2) Wash it THOROUGHLY before using it

3) Put it in a bag/stocking and place it in your filter. At first it needs to be 'filtered through' flowing water to work well. Once your pH has balanced, you can scatter it through your substrate if desired or leave it in the bag.

4) Crushed coral only raises the pH until it hits 'equilibrium' - being between 7.4 & 7.8. Once it hits that, it is rock solid and will not change.

5) It takes 2 - 3 days for the coral to work, leave it a week to be safe.

6) Once you use the coral, you never have to redo it - it will stay balanced. If your pH starts to drop, the coral automatically adjusts it by releasing more calcium. Your pH will NOT rise above the equilibrium either.

7) Don't let your LFS kid into thinking crushed coral is 'special and expensive' - it's just marine tank substrate... nothing more.

8) You can also use a shell from the beach/seaside. Be careful of ornamental ones, they may have been bleached - they will leach bleach and KILL your babies :(

9) Boil any shells you find on the beach for 30 minutes. A couple of palm-sized ones or a handful of smaller ones equals 1/2 cup of crushed coral.

10) When doing water changes of 50% or over, leave 2 tablespoons of coral in your bucket in a bag (can stay there always) for leaving your water out over night.

Amazing what info you can get when you smile sweetly :D

Oh... if anyone in Australia needs a couple of cups of crushed coral... I ended up with a 5kg bag (doh!) I will gladly mail some out for a couple of dollars just to cover postage.

Hi Squik,

i know this is an old post, but i would love a couple cups of crushed coral if you still had any? I would have PM u but I dont think I have that privilege yet. I'm in Brisbane QLD.

Let me know,

thanks

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I got a problem. I bought crushed coral today, just washed it, put it in a stocking, but I can't fit it in the filter. There is like an inch of room behind the filter pads. Should I take them out and replace them with the coral for a day? A quick reply would be extremely helpful! :)

EDIT: there is not even an inch room. I can barely even squeeze my pinky finger in there...

Edited by Oerba Yun Fang

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Oh, the bubbler sounds like a great idea! I might just do that. Thanks a lot, koko!

AH! I just did that and as soon as I submerged the stocking with the crushed coral, a big cloud of cloudiness floated up! I had the coral rinsed and washed for several minutes. Is that normal? I took it back out for now, just to be safe.

Edited by Oerba Yun Fang

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Oh, okay. Thanks.

I'm just panicking when something unexpected happens in my fish tank. I didn't think so much "dust" would still come out after soaking and rinsing it. Had to replace one of the filterpads with the coral, I didn't trust the fine material of the stocking right there in the tank. I don't want any of my fish to get caught on it over night.

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Oh i understand hun, first time i did that it did the same thing to me and I thought What in the heck, but the fish were fine :)

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I know this is an old post/article and I can start a new thread if needed? I just have a question about 10. when doing water changed 50% or more leave a bag of 2 tablespoons in a bucket? not sure what you're referring to here. I have a 75 gal and run tap water directly into tank when I do my 75 % water changes ?

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I know this is an old post/article and I can start a new thread if needed? I just have a question about 10. when doing water changed 50% or more leave a bag of 2 tablespoons in a bucket? not sure what you're referring to here. I have a 75 gal and run tap water directly into tank when I do my 75 % water changes ?

The Op was talking about peoples PH/ Kh being so low that the easy way to make sure it is stable is to , have bucket with water you plan on using.. have some crushed coral in a bag with an air stone and let the water sit over night. This will get the KH and ph back to the tanks ph and kh hun. :)

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