I didn't think it was possible to get much/any pearling without CO2?
My 10 gallon (WIP) with 36 watts of light doesn't have any CO2 yet. But I've noticed a few bubbles stuck to the Cabomba since I added it last week. But tonight I did a small water top off and added my weekly dose of Excel. I started seeing a few large bubbles as I was sitting here surfing. It's a little hard to tell which plant they're coming from, as the bubbles are few and far between. But I think it's coming from the Ludwigia.
My 10 gallon (WIP) with 36 watts of light doesn't have any CO2 yet. But I've noticed a few bubbles stuck to the Cabomba since I added it last week. But tonight I did a small water top off and added my weekly dose of Excel. I started seeing a few large bubbles as I was sitting here surfing. It's a little hard to tell which plant they're coming from, as the bubbles are few and far between. But I think it's coming from the Ludwigia.