![]() The most successful planted tankers I follow / know do not use scientific studies to base their decisions off of, they watch their own tanks, and make adjustments as needed. They are larger scaled tests, in real environments using local populations of species and species interaction / nutrients and nutrient interactions. No, because scientific research rarely ever correlates to "real world" planted tank dynamics. Under higher growth speeds, they plant will require 6 parts of NO3 to sustain it's growth speed, meaning in those 10 parts of water it can uptake, it needs 6 parts of NO3 or else it will start canalizing it's own old growth to feed a nitrogen deficiency. Under lower growth speeds (low light / no CO2) this will be enough to sustain growth. In those 10 parts of water we have 3 parts of NO3. I've never heard or experiences PO4 killing fish. This can be mitigated with large water changes, and light use of O+. This is why I use individual ingredients for all of my fertilizers, so I can control exactly what I put in my tanks.Ģ) Super high nitrates are bad yes, long term health is affected. They are changed to obtain a desirable concentration of each nutrients yes. So, it's not waste or excess, it's an essential concentration to supply the plant with enough NO3 to sustain it's growth speed.Ĥ) Fertilizers made for aquatic use are made up of ingredients that are used for terrestrial plants. Under higher growth speeds, let's say the plant will require 6 parts of NO3 to sustain it's growth speed, meaning in those 10 parts of water it can uptake, it needs 6 parts of NO3 or else it will start cannibalizing it's own old growth to feed a nitrogen deficiency. Lets say a plant can only uptake 10 parts of water. They uptake water, and whatever is in that water is what they uptake. Plants cannot choose which, or how much of each nutrient to uptake. ![]() And no, I do not agree with the "plants use what they use and any NO3 measured is just waste / what plants do not use". I've never heard if or experienced PO4 killing fish.ģ) Yes, some plants prefer higher concentrations. High on the macros, and lighter on the micros, even lighter on the more toxic micros.Ģ) Super high nitrates are bad yes, long term health is affected. For general concentrations, they aren't bad. And yes, obviously the concentrations of nutrients are aimed at terrestrial, garden / potted plants (this is one of the reasons why I do not use O+). Terrestrial fertilizer contains incorrect concentrations for aquatic plants.ġ) There are very few plants we keep that are completely aquatic, most of the common ones are both aquatic and terrestrial. I agree that, in generic terms, they need the same nutrients but what you are overlooking is the ratios/concentrations of each. ![]() Yes, there are some that can grow in each, but the majority? No. Most of our plants are aquatic and terrestrial? I couldn't disagree more. Using fertilizer that is meant for aquatic environments are far easier to calculate as that is their intended use, in the correct (for the most part) concentrations/ratios. This is just excess not being used by the plants and harming the fish. ![]() The more nitrates you add, the more harmful it is to the fish. You have come to the conclusion (on another forum post, telling everyone they were wrong) that plants like high nitrate levels, when really this is just excess nitrates in the water that are not being used by the plants. You are correct that this would not cause concern in a plants only tank, but you can reasonably come to the conclusion that most people here have fish in the aquarium.ģ. High nitrates and phosphate is indeed an issue in a fish tank. Terrestrial fertilizer contains incorrect concentrations for aquatic plants.Ģ. Most of our plants are aquatic and terrestrial? I respectfully disagree.
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