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  • Carib Sea ACS00150 Crushed Coral for Aquarium, 40-Pound
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Customer reviews

4.6 out of 5 stars
4.6 out of 5
113 global ratings
5 star
82%
4 star
4%
3 star
6%
2 star
3%
1 star
5%
Carib Sea ACS00150 Crushed Coral for Aquarium, 40-Pound

Carib Sea ACS00150 Crushed Coral for Aquarium, 40-Pound

byCarib Sea
Size: 40 lbsChange
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Top positive review

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RobJam
5.0 out of 5 starsSets up PH quickly but requires A LOT of rinsing
Reviewed in the United States ๐Ÿ‡บ๐Ÿ‡ธ on November 12, 2022
The first few rinses of this substrate looked like chai tea. I rinsed each bucket full AT LEAST ten times, but it still didn't rinse clean. I finally put it in the tank and set up my canister filters with very fine cotton-wool type filters and let it run several days prior to re-cleaning the canisters. There is STILL leftover residue, but I assume it will settle down over time. I suppose if I was a tweaker, I could scrub every chip of crushed coral, but I'm not so I won't.
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Top critical review

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Everyday Guy
3.0 out of 5 starsToo fine for me
Reviewed in the United States ๐Ÿ‡บ๐Ÿ‡ธ on February 14, 2016
I was trying to get a coarser coral that would not plug my pumps and filter and this unfortunately is not it, Chunks are not as large as it looks in the picture, It took several days for my filter to remove the white "cloud" after adding it to my tank. My sand filter still plugs up daily (about a week now). I'm sure I'll eventually get rid of the fines. Recommendation -- Rinse repeatedly before using!
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2 people found this helpful

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From the United States

RobJam
5.0 out of 5 stars Sets up PH quickly but requires A LOT of rinsing
Reviewed in the United States ๐Ÿ‡บ๐Ÿ‡ธ on November 12, 2022
Size: 40 lbsVerified Purchase
The first few rinses of this substrate looked like chai tea. I rinsed each bucket full AT LEAST ten times, but it still didn't rinse clean. I finally put it in the tank and set up my canister filters with very fine cotton-wool type filters and let it run several days prior to re-cleaning the canisters. There is STILL leftover residue, but I assume it will settle down over time. I suppose if I was a tweaker, I could scrub every chip of crushed coral, but I'm not so I won't.
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Gina M. Cox
5.0 out of 5 stars As described
Reviewed in the United States ๐Ÿ‡บ๐Ÿ‡ธ on April 18, 2021
Size: 40 lbsVerified Purchase
This looks phenomenal in my cichlid tank. You must thoroughly rinse this substrate before putting it in your tank. It will still cloud up but it will dissipate and settle within a few days.
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Gina M. Cox
5.0 out of 5 stars As described
Reviewed in the United States ๐Ÿ‡บ๐Ÿ‡ธ on April 18, 2021
This looks phenomenal in my cichlid tank. You must thoroughly rinse this substrate before putting it in your tank. It will still cloud up but it will dissipate and settle within a few days.
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Derick sears
5.0 out of 5 stars raises ph
Reviewed in the United States ๐Ÿ‡บ๐Ÿ‡ธ on November 28, 2018
Size: 40 lbsVerified Purchase
Awesome product if your looking to raise your ph for african cichlids. I was always told crushed coral would only stabilize ph but i tested 2 tanks 1 with sand 1 with crushed coral tank 1 ph was 7.6 tank 2 was 8.0 which is exactly what i wanted. will need a little rinsing but that is to be expected with pretty much and substrate.
One person found this helpful
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Jessica Cantwell
5.0 out of 5 stars Crushed coral
Reviewed in the United States ๐Ÿ‡บ๐Ÿ‡ธ on March 14, 2020
Size: 40 lbsVerified Purchase
Looks so beautiful. My cichlids love the crushed coral. My cichlids dig like crazy and it doesnt seem like the crushed coral is to sharp. Would recommend to stabilize ph and quality of water. Would buy again.
2 people found this helpful
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Andy Shackleford
5.0 out of 5 stars As good as any other brand out there
Reviewed in the United States ๐Ÿ‡บ๐Ÿ‡ธ on June 3, 2018
Size: 40 lbsVerified Purchase
Does a good job at buffering my soft water and keeping the ph at a steady 7.5. The pieces are big enough that they don't fall through the mesh bag I put them in. Make sure to rinse it well before putting it in your tank. 40lb at this price is a steal and will last me a lifetime.
One person found this helpful
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Howard Hoag
5.0 out of 5 stars This is really good stuff all-round!
Reviewed in the United States ๐Ÿ‡บ๐Ÿ‡ธ on March 12, 2021
Size: 40 lbsVerified Purchase
Worth every dime of it
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Chris Jenkins
5.0 out of 5 stars The bad reviews are BS
Reviewed in the United States ๐Ÿ‡บ๐Ÿ‡ธ on March 24, 2018
Size: 40 lbsVerified Purchase
The media could not be loaded.
 Rinse thoroughly like you should do with anything you put in your tank and you will have no issues. Yes there is debris in it but it's a natural material so that's expected. RINSE THOROUGHLY! No issues and my cichlids love it!
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Chris Jenkins
5.0 out of 5 stars The bad reviews are BS
Reviewed in the United States ๐Ÿ‡บ๐Ÿ‡ธ on March 24, 2018
Rinse thoroughly like you should do with anything you put in your tank and you will have no issues. Yes there is debris in it but it's a natural material so that's expected. RINSE THOROUGHLY! No issues and my cichlids love it!
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Jeremy l
5.0 out of 5 stars As advertised
Reviewed in the United States ๐Ÿ‡บ๐Ÿ‡ธ on December 6, 2020
Size: 40 lbsVerified Purchase
Excellent product and fast shipping
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GTeng
5.0 out of 5 stars Great product
Reviewed in the United States ๐Ÿ‡บ๐Ÿ‡ธ on March 10, 2019
Size: 40 lbsVerified Purchase
Worked very well to buffer my RO DI water. I rinsed it only slightly with just one bucket of water and put it in my filter. There is only slight cloudiness in the tank right after adding it.
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Maybe Maybe Not
5.0 out of 5 stars Great coral substrate
Reviewed in the United States ๐Ÿ‡บ๐Ÿ‡ธ on October 20, 2018
Size: 40 lbsVerified Purchase
Very attractive product, and you do see small shells here and there which is kind of nice. I bought this product to buffer the water in my 10 gallon tank for my guppies and they are very happy.
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