Who Gives A Fish Forums

I've heard mixed things about CO2. Some say it's overkill for low-tech tanks, but others swear by it. My tank's been running for a year with just ferts and the plants are alive, but not thriving. Maybe I should try morning dosing too.

I've always added mine in the evening because I read somewhere that plants absorb nutrients better at night. But my tank's only 10 gallons with low light, so maybe it's different. I use Seachem Flourish and my Anubias seem happy, but the Swords are kinda slow.