GENERAL/CARBONATE HARDNESS KIT price history and forecast - API 58
GENERAL/CARBONATE HARDNESS KIT

GENERAL/CARBONATE HARDNESS KIT

Brand:
API
Model Number:
58
UPC:
317163010587
EAN:
0317163010587
ASIN:
B003SNCHMA
Walmart SKU:
25263702

Third-Party Seller Summary

Third-Party Seller Price History Summary
Price Type Price Date
Highest Price
$28.79
Lowest Price
$11.27
Most Recent Price
$11.98
Average Price
$13.75
First Tracked
Last Update

Walmart.com Summary

No price history available for Walmart.com

Price Analysis

Price history data is not available for this product at the moment.

Current Trend: No Walmart.com pricing data available for analysis.

Customer Insights: Rated 4.64/5 from 33 reviews.

Customer Reviews

33 reviews

Customer Reviews

4.6
Based on 33 reviews
5
26
4
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Showing 10 of 33 reviews

Great hack for testing water hardness

Christina September 19, 2026

I learned about this testing kit on a subreddit forum dedicated to helping folks have more success with their laundry. I was skeptical, but had looked into having my water tested and did not want to spend the $$$ for private testing. This small test kit helped me learn how to adjust additives to my laundry to ensure that our clothes are getting as clean as possible. As much as I would love to have a water softener, it just isn't in the cards right now… So knowing the right things to use is just as helpful!

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Great

Madison September 29, 2026

Easy to use and gives clear, reliable results. The color change is easy to see, and it's been really helpful for keeping track of my aquarium's GH and KH. Definitely worth having if you want to monitor water hardness accurately.

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Definitely need when setting up a new aquarium

SFlaDude October 19, 2026

Very easy to use. Helps when determining your aquarium water hardness level. My new community tank was too soft so this helped me determine how much Seachem Buffer I needed to use.

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API is the standard

Tony October 22, 2026

Works very well. No color chart needed since it is a test where you are just counting the number of drops to get a water color change. Great brand, no concerns.

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Best GH and KH test kit.

raid October 7, 2026

Item as described. This is the best KH and GH test available for this price range in the market. Good price and fast free delivery.

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Jessica September 20, 2026

Test was delivered quickly and works as intended! This was the only place I could find the liquid test.

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Good product

Saul September 25, 2026

Easy to use instructions aren't great but used AI and got good results

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Quality testing kit

Christopher September 24, 2026

Quality kit that gives a much higher quality reading than test strips

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Diana October 14, 2026

I love api products and glad that I can get them threw Walmart.

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Joy October 11, 2026

didnt work well for me, tried multiple times

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Price History

Historical price data graph for GENERAL/CARBONATE HARDNESS KIT

Recent Price Changes

Detailed price history for the past 90 days

Walmart.com Pricing

0 records

No Walmart.com pricing data available for analysis.

No Walmart price history available in the past 90 days

Third-Party Seller Pricing

42 records

Third-Party Sellers prices have ranged from $11.98 (Nov 4) to $28.79 (Sep 8) over the past 90 days. Current price is 17.0% below the 90-day average of $14.44.

Third-party seller price history for GENERAL/CARBONATE HARDNESS KIT showing recent price changes
Date Price Change % Change
$11.98 $+0.00 +0.0%
$11.98 $+0.00 +0.0%
$11.98 $+0.00 +0.0%
$11.98 $-1.61 -11.8%
$13.59 $+0.72 +5.6%
$12.87 $-0.72 -5.3%
$13.59 $+0.00 +0.0%
$13.59 $+0.00 +0.0%
$13.59 $+0.00 +0.0%
$13.59 $+0.00 +0.0%
$13.59 $+0.72 +5.6%
$12.87 $-0.72 -5.3%
$13.59 $+0.00 +0.0%
$13.59 $+0.72 +5.6%
$12.87 $+0.00 +0.0%
$12.87 $-0.72 -5.3%
$13.59 $+0.72 +5.6%
$12.87 $-0.72 -5.3%
$13.59 $+0.72 +5.6%
$12.87 $-0.72 -5.3%
$13.59 $+0.00 +0.0%
$13.59 $+0.00 +0.0%
$13.59 $+0.40 +3.0%
$13.19 $+0.00 +0.0%
$13.19 $+0.00 +0.0%
$13.19 $+0.00 +0.0%
$13.19 $+0.00 +0.0%
$13.19 $+0.00 +0.0%
$13.19 $-1.06 -7.4%
$14.25 $+0.00 +0.0%
$14.25 $+0.00 +0.0%
$14.25 $+0.00 +0.0%
$14.25 $+0.00 +0.0%
$14.25 $-14.54 -50.5%
$28.79 $+8.81 +44.1%
$19.98 $+0.00 +0.0%
$19.98 $-5.60 -21.9%
$25.58 $+10.59 +70.6%
$14.99 $+0.00 +0.0%
$14.99 $+0.00 +0.0%
$14.99 $+0.00 +0.0%
$14.99 — —

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