Submerged macrophytes have a strong ability to absorb P and play important roles in maintaining aquatic ecosystem functions. Excessive P input often leads to cyanobacterial bloom, thus triggering ecological imbalances and a series of environmental problems. Phosphorus (P) is a limiting element in many aquatic ecosystems. 2Ministry of Water Resources Research Center of Poyang Lake Water Resources and Water Environment, Jiangxi Institute of Water Sciences, Nanchang, China.1Jiangxi Provincial Engineering Research Center of Water Engineering Safety and Resources Efficient Utilization, Nanchang Institute of Technology, Nanchang, China.These are some of the reasons that Miracle Grow is not very well suited for use in our tanks.Wei Li 1*, Yujie Li 1, Jiayou Zhong 2, Hui Fu 2, Jie Tu 1 and Houbao Fan 1 Add on top of this, vulnerable plants (no wax cuticle) and you have several factors that can severely damage plants. Furthermore, in our low pH tanks nitrification does not easily happen, so once all the ammonia has been released and is floating around in the water column it is not removed and detoxified by bacteria like it is in the garden. There is no clay component in it to stabilize the ammonia and keep it from leaching into the water column, so high rates of ammonia release are common. Miracle grow soil is pure organic material. Lower concentrations are probably also not very good for plants, though we probably don't see the symptoms of toxicity at low concentrations because they take longer to appear and are more subtle than at higher concentrations. Basically, between 1 and 2 ppm ammonia is enough to start damaging certain species of aquatic plants within a few days of exposure (similar to fish toxicity ranges). This makes aquatic plants much more sensitive to toxins than terrestrial plants, and at the same time presumably more adept at taking up lower concentrations of nutrients (which are normal for aquatic environments). They lack a wax cuticle which acts as a barrier to substances trying to get into the plant. When this happens ammonia is not removed from the plant's environment in the normal way, it builds up to levels that are much higher than the plant can handle.įurthermore, aquatic plants, unlike the terrestrial plants that the book was talking about, absorb nutrients from all surfaces, roots, stem, and leaves and do not have the same physical barriers that terrestrial (or emersed grown plants) have. In our CO2 injected high tech tanks we often reach pH 6 or sometimes lower which inhibits a lot of the ammonia detoxification processes as the book quote above mentioned. The mechanism for exactly why ammonia/ium damages plants is not known at this point in time, but damage seems to be due to a plant's inability to prevent too much ammonium from coming into the plant. Most plants cannot handle ammonia/ammonium very well. I'm more worried about the temperature going down to 64 during the day coming up this winter.įinally, would I be able to culture live foods, like grindal worms and red worms in the containers?įrom:Handbook of Plant Nutrition, by Allen V. What if I added a cup of yeast/sugar mix to the container to help boost CO2 levels? Or would the carbonic acid produced by water mixing with the carbon dioxide kill the plants?ĭoes temperature directly affect plant growth like it does bacterial growth? My house can go as low as 64 F in the winter to as high as 79 F in the summer. So do I dirt the container, and fill it up so that the water goes above the plants and then wait for the water level to go down over time? How do you deal with algae during this period? If I put the emersed plant container underneath a skylight, will the plant grow straight? I'm assuming that the plants won't permanently go one direction or another due to the sun constantly going from one direction to another throughout the day. Zapins: does this planting method include crypts? How do you grow Java Fern and Anubias? Monster Fish: how do I know what the humidity is?
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