This is a discussion on Co2 Occasionally ? within the Beginner Planted Aquarium forums, part of the Beginner Freshwater Aquarium category; -->
Must you maintain co2 once you start or is it safe to give say weekly to boost plants health? Theres also ph alterations too. ...
Must you maintain co2 once you start or is it safe to give say weekly to boost plants health? Theres also ph alterations too. I ask this because the retailer i buy plants from has added co2 to his tanks and once planted the plants seem to go bad for a week then perk back up ( for the most part) and i never had trouble with these particular plants.
Plants grow using the sugars they produce through photosynthesis; to do this, they need light and CO2 and nutrients, and in the aquarium these must be balanced. It is a daily process, programmed by evolution/nature. My experience (and from what I've read from those who know far more about this than I do) is that consistency day to day is important.
I've never used CO2 because I am able to get the look I want without it. Others who have CO2 experience may have more advice. From my perspective, this would be similar to saying that you're only going to turn the lights on for one or two days a week--that won't work.
CO2 outgasses pretty quickly, in a matter of hours depending on aeration and surface disturbance. Adding some once a week would will result in fluctuations that will likely induce agae blooms. The need for CO2 is determined by lighting, more light demands more CO2. If the lighting is high enough CO2 must be supplemented by either injection or flourish excel, the latter is margianlly effective at best IME, and this supplementation must be kept consistent. Essentially you either do it or you don't, depending on you set up, goals, maintenance desires, etc. HTH!