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Seachem Ammonia Alert
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This report was last updated 7/17/2020.
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Report Info:
Note: We only analyze "reviews" and ignore one-tap "ratings".
Top products in Pet Supplies with authentic reviews:
Report Card
Pass Overall Grade
FAIL Suspicious Reviewers
WARN Reviewer Participation
PASS Rating Trend
PASS Unverified Purchases
PASS Word Count Comparison
PASS Phrase Repetition
PASS Overlapping Review History
PASS Reviewer Ease
PASS Brand Repeats
PASS Incentivized Reviews
PASS Deleted Reviews
Most Trusted Reviews
Works great. I didn't test it though. My level has ... [Go to full review]
Apr 29, 2016
100%
TRUST
TRUST
- Verified Purchaser
- Critical Reviewer (avg. rating: 3.9)
Least Trusted Reviews
We couldn't find any low-quality reviewsAnalysis Details
Fail Suspicious Reviewers
One-Hit Wonders
2 of the 83 reviewers have only reviewed this product. The One-Hit Wonders have rated this product an average of 1.0 while the reviewers who have posted more than one review have rated this product an average of 4.0. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Warn Reviewer Participation
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- 39%
- From reviewers with an overrepresented participation
We see the following 1 participation group with a statistically significant greater concentration than what we'd expect to see:In total, we found that 32 reviewers (or 39%) are within an overrepresented participation group. While this is more reviews from overrepresented participation groups than we'd expect to see, the discrepancy in ratings between reviewers in an overrepresented participation groups and all other reviewers isn’t significant enough to rule out the possibility of it being due to random chance.
Pass Rating Trend
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- 0%
- Created on high-volume days
We counted 83 reviews for this product over the span of 1,608 days, an average of 0.1 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 2 or fewer reviews on any given day. We didn't find any days exceeding this threshold.
Read more about our Rating Trend test.
Read more about our Rating Trend test.
Pass Unverified Purchases
9 of the 83 total reviews for this product are unverified purchases. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Unverified purchases may be the result of Kindle Unlimited readers, buyers who didn't pay full price, or reviewers who did not purchase the product at Amazon. Read more about our Unverified Purchases test.
Pass Word Count Comparison
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- 0%
- Have an overrepresented word count
We didn't find any review word count groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Word Count Comparison test.
Read more about our Word Count Comparison test.
Pass Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
Common Phrases in Reviews:
Show MoreShow Less
2 reviews
(1.0/5)
(1.0/5)
2 reviews
(1.0/5)
(1.0/5)
2 reviews
(1.0/5)
(1.0/5)
2 reviews
(3.0/5)
(3.0/5)
3 reviews
(4.3/5)
(4.3/5)
2 reviews
(4.0/5)
(4.0/5)
2 reviews
(4.5/5)
(4.5/5)
2 reviews
(5.0/5)
(5.0/5)
2 reviews
(4.5/5)
(4.5/5)
Common Phrases in Titles:
2 reviews
(3.0/5)
(3.0/5)
8 of the 83 total reviews for this product use substantial repetitive phrases between them. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
7% also reviewed:
Luffy Giant Marimo Moss Ball (Approx 2 inch) X 1... by USA
5% also reviewed:
NICREW ClassicLED Aquarium Light, Fish Tank Light... by NICREW
4% also reviewed:
Marina Floating Thermometer with Suction Cup by Marina
4% also reviewed:
EHEIM Jager Aquarium Thermostat Heater by Eheim
4% also reviewed:
Headphone Adapter for iPhone Charger Jack AUX... by LeeRay
Does not include products
from the same brand
from the same brand
25 of the 83 reviewers have substantial overlapping product review history. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Reviewer Ease
The ease score is the average rating for all reviews that a given reviewer submits. The average ease score for reviewers of this product is 4.2, while the average ease score for reviewers in this category is 4.3.
4.2 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeaters
1 of the 83 reviewers have reviewed other products for this brand. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
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- 0%
- Admitted to receiving an incentive
We didn't detect any reviews that used language indicating they were incentivized.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Pass Deleted Reviews
- 0
- Reviews have been deleted
We have not discovered any deleted reviews for this product.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
There are a few limitations to keep in mind regarding the Deleted Reviews test:
- We don't have a magic ability to collect every single deleted review; we can only identify reviews as deleted if we collect them on one date and then notice they are no longer visible on a subsequent date.
- We have no information on reviews that were never published in the first place.
- We also don't know why these reviews were removed. It could be action from the platform, personal decision by the review author, part of an entire account closure, even some data error on our part, etc.