Seachem MultiTest™ Marine pH & Alkalinity Test Kit
The MultiTest™ Marine pH & Alkalinity test kit features a unique dye with a pronounced color change between 8.0 and 8.3, making it easy to read in the critical pH range for marine aquariums.
- Unique dye provides clear color change between 8.0 and 8.3
- Multi-cavity plate allows simultaneous testing of up to six samples
- Includes reference solution for test validation
- Designed for marine or high pH freshwater environments
Marine pH should be maintained between 8.2 and 8.4. Tanks treated with limewater may reach up to 8.6. Natural seawater has a total alkalinity of 2–3 meq/L, but aquarium water should ideally have a total alkalinity of 4–6 meq/L.
| Parameter | Recommended Range |
|---|---|
| pH | 8.2–8.4 (up to 8.6 with limewater) |
| Total Alkalinity | 4–6 meq/L |
FAQ
What is the pH range for marine aquariums?
The ideal pH range for marine aquariums is 8.2 to 8.4. Tanks with limewater dosing may reach up to 8.6.
How many tests can be performed at once with this kit?
The multi-cavity plate allows up to six tests to be performed simultaneously.
Is this test kit suitable for freshwater tanks?
Yes, this kit is suitable for marine or high pH freshwater environments.
Sophie Knox –
This test kit is very easy to use. The color change is clear and accurate, especially in the 8.0 to 8.3 range. I tested both pH and alkalinity weekly and found the results consistent with my tank’s stability. The multi-cavity design saves time when checking multiple parameters.
Kimberly Ogden –
The dye response is sharp and reliable. I appreciate the included reference solution for verifying test accuracy. It’s a small but useful detail for maintaining stable water conditions in my reef tank.
Ava Manning –
I’ve used this kit for over a year and it’s still giving consistent readings. The design makes it easy to test pH and alkalinity at the same time, which helps me adjust water parameters efficiently.