Shipping Estimate
USA
- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 13 - Jul 18
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For Your Every Summer RSVP, with Code: SUMMER15
Description
JBL KH Test KitSimple and reliable control of water values in aquariums and ponds. Determination of the optimal carbonate hardness for freshwater and saltwater Colour change test: Fill plastic cuvette with water sample, add reagent drop by drop until colour changes from blue to yellow. Number of drops = level of carbonate hardness When to use: when setting up a new aquarium: once a week Online Laboratory: regular control for a healthy aquarium pond with conditions
- Simple and reliable control of water values in aquariums and ponds. Determination of the optimal carbonate hardness for freshwater and saltwater
- Colour change test: Fill plastic cuvette with water sample, add reagent drop by drop until colour changes from blue to yellow. Number of drops = level of carbonate hardness
- When to use: when setting up a new aquarium: once a week
- Online Laboratory: regular control for a healthy aquarium/pond with conditions close to nature. JBL has water tests in the form of quick tests or colour change tests for every water analysis. Testing aquarium water for healthy, clear water
- Package contents: 1 quick test, KH Test. Incl. reagent and plastic vial. Refill reagent available separately
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 1008 reviews
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Product Reviews
★★★★★ 5
Work great
Style: Levelers, Size: 10 Pack
These are very good for leveling camper at uneven campsites.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
★★★★★ 4
Worked well!
Style: Levelers, Size: 20 Pack
We recently had our first camping trip with our ‘84 RV at a local state park. prior to the camping trip, it had rained a lot. At this park, parking is on grass. I was nervous the heavy RV would sink and we would get stuck so I found these. It was packaged nicely. Easy to figure out how to use. It took a bit to get the RV to back over them but was good once it did. Color is bright. They were stable. A few did “bow” we noticed after we grabbed them out. Came in a nice storage bag and light to carry.
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Reviewed in the United States on July 2, 2024
★★★★★ 5
Good product
Style: Levelers, Size: 10 Pack
I am a truck camper that camps about 4 months of every year and use these blocks to level my truck at each of the various sites I camp. They stack and are stored in a bag so take limited space. The blocks are easy to use, quick to deploy, are fairly durable and work well - I love them! They are a little pricy but worth it to me.
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Reviewed in the United States on August 7, 2025
★★★★★ 5
Great Product
Style: Levelers, Size: 10 Pack
Item as advertised and arrived in great condition!
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Reviewed in the United States on May 1, 2026
★★★★★ 5
Great stabilizer
Style: Levelers, Size: 20 Pack, Style: Levelers, Size: 20 Pack
Very light, seem very sturdy and lock together snuggly. Instead of carrying heavy wood to support, now I can use the light weight levelers. Tested multiple times to make sure they could hold, so far no issues going up and down.
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Reviewed in the United States on May 1, 2026
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