Of course I already had changed water on a regular base, hanged tea bags in my aquarium and whatever you can think of. When I read this story I tried his method in my aquarium. The blue-green algae died and his tank was a lot cleaner. So the Redfield ratio increased and was removed from the blue part of the schedule. By putting them in the filter under his tank (in darkness) they died and so the nitrogen was released again.
Aquarium chemistry calculator free#
What happened then? Blue-green algae can obtain free nitrogen gass from the air. For the happy few amongst us, there has been reserved a spot somewhere in the middle: paradise for an aquarist.Īs mentioned before, Adriaan Briene removed blue-green algae from his aquarium and put them it in his filter. A point in the blue area means chance of having blue-green algae a point in the green part. It works like this: search for the measured nitrate percentage (on top) and the - phosphate percentage (left) and at the crossing in the schedule you will find the Redfield ratio. For those who are interested: click here (still in Dutch).įor everybody else I have recapitulated it in a schedule. Besides, it is easy to convert nitrate to nitrogen and phosphate to phosphorus. However nowadays there are measuring sets to obtain in shops, like ammonium (NH4+), nitrite (NO2-), nitrate (NO3-) and phosphate (PO43+). Which means a Redfield ratio of 16.Īll right, what should you do with it, with nitrogen and phosphorus? Elements that probably don't mean a thing to you. The optimum seems to be at the proportion nitrogen:phosphorus = 16:1. a lot of phosphorus leads to a big change that you will start growing blue-green algae. It seems that the change of getting green algae is big, if comparatively much nitrogen and little phosphorus is in the water. has been translated by Agnes Zaalinto Dutch my thanks to her. Several researchers have used the Redfield ratio to see what the influence is of different values on the occurrence of various types of algae.
That is the ratio between the quantity of nitrogen and phosphorus in the water. He read something about the so called Redfield ratio.
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