Good day, everyday!!! ^^
Recently, I discovered that dosing Potassium Nitrate (KNO3) at certain level may kill shrimp. Usually I keep my NO3 level at around 5ppm. If the tank does not have produce enough NO3, I will supplement it with KNO3. About a few months back, I observed a pattern of those tanks that I dose higher dosage of KNO3 has more frequent shrimp death and lower population growth when compared to those that I did not dose KNO3. All tanks have NO3 level between 5 to 10ppm. To double confirm my suspicion, I stop dosing of KNO3 in all the tanks. After that, I stop seeing any shrimp dead and the baby survival rate is much higher.
As such, I decided to develop my own nitrogen supplement product. Not sure you will remember in one of my probiotic tests, my Java Fern was growing healthily even with zero NO3. This shows that plants are able to use organic substances that the probiotic produce for photosynthesis. For this nitrogen supplement, I decided to go towards this path to search for the ingredient. The previous finding is not scientific enough and I decided to test it out in a controlled environment.
For the detail of the experiment, please refers to here: http://www.shrimpydaddy.com/blogs/blog/18749497-in-search-of-shrimp-safe-nitrogen-supplement-day-1
Cheers. ^^
Shrimpy Daddy