03-15-2007, 01:08 AM
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Testing GH and KH
I recently purchased this Deluxe testing kit from Pet Solutions and to test KH and GH you have two colors. A start color and end color. In the instructions, it states to add one drop of the solution to 6 ml of water then count the drops after that. But the one drop doesn't match my starting color on the card. It takes 5/6 drops to match my starting color.
So should I count the drops from the 1st drop or match the starting color then count the drops to the ending color?
Also, does the gravel that contain trace elements, iron and what ever else it needs really help? I was looking at some of those and wondering. I'm starting to grow plants and recieved my CO2 kit in the mail and noticing a difference in just a few days. The next tank I set up I actually want to do right instead of going off a whim like I did this one.