09-24-2011, 09:32 PM
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Originally Posted by DKRST
Welcome to the forum!
The short answer is no, CO2 is not a requirement for a planted tank. Adding CO2, which may be a limiting factor in an aquatic system, just accelerates the rate of plant growth up to 2000%, but also increases maintenance and nutrient consumption. Please read Byron's eloquent "stickies" regarding a planted tank. Balancing light, CO2, and nutrients is required. Increase one, and you may need top balance the increase out with additions from the other limiting factors.
Any particular reason you are using a soil substrate?
I read the stickies twice in the past week, it makes sense but I still wanted extra opinions on the matter. And no particular reason, I've read several threads (I've been lurking the forums since before I made my account and began posting, lots of nice theorycrafting and ideas floatin around) about the soil substrate and it seems like a new and fun idea to tackle. And I plan on slowly adding plants and bulking up the flora in my tank before going nuts with the fauna, so what better time to start playing with a different substrate.