Originally Posted by Tree
So I have a question. I have gravel in my 3 gallon and 2.6 gallons that are normal size, not the small gravel like you mentioned on the info. Would that be ok for beginner plants like Anubias, Hornwort and Mondo grass plants? Also I wont need to add any co2 to the tanks at all right? I read that snails and ghost shrip will help with that?
Since all the plants you have either need to be tied to something (Anubias) or used floating (Hornwort) or not used at all since it not aquatic (Mondo grass)...your gravel should be fine. For a soil based tank small diameter gravel is best or sand.
IMO you don't need to inject CO2-especially for those plants anyway....
In your soil based systems-the natural break down or decomp will produce enough CO2 naturally for most plants-This does vary however, it depends on plant species, lights, photoperiod, stocking, soil type/amount, water changes/vacuuming....etc......With your natural planted systems once mature and thriving-are as close to a natural ecosystem that can be created in a closed system...this too can vary from system to system based on a lot of different reason.....