gH Test Kit by Sera makes it easy to monitor the total hardness...
SERA gH Test Kit.
**** PRODUCT MANUAL ****
gH Test Kit by Sera makes it easy to monitor the total hardness.
SERA gH Test Kit 4 out of 1 5 based on 1 ratings. 1 user reviews.
- Efficient and simple Review by JoeP32582
- Nice and simple. One drop equals one degree of hardness. The color changes abruptly so no more guessing. Why cant more tests be this efficient?! (Posted on 2/19/2009)