Hello, I'm new to a planted aquarium. Loving it so far and everyday I keep learning something new. Can anyone explain to me why pearling of plants slow down after the water becomes about 1 week old, even though I have a co2 injection system? I'm using a nano diffuser I got from ebay and it breaks down the bubbles really well. Anyway, I did a water change today and the plants are pearling like crazy. I think it's really neat and would like an explanation behind this. Thanks.