Hi all,
That one, <"dissolved oxygen"> is always your friend.Can’t stress this one enough… If you’re running a low tech tank, surface agitation is your friend. It ensures a reliable, continual and consistent supply of dissolved gases. More rot - provides the required oxygen. Fish dies - provides the required oxygen to break it down. Co2 - keeps it available for plant tissues to uptake. If it’s not needed - maintains equilibrium anyway.
<"Perfect">.My tank volume is 180l
I'll use nitrate (NO3-) again as my target nutrient, but I'll go for 10 ppm NO3-, rather than 10 ppm N (~44 ppm NO3-). So the only differences are tank volume and nutrient dosing level. I still assume that all the nitrogen is as NO3.I should probably put in the calculation for that.
- The tank is a nominal 70 litres and
- I want 10 ppm N
- Solufeed 2 : 1 : 4 is 15% nitrogen (N).
- There are 1000 mg in a gram, so 1 gram of Solufeed contains 0.15g or 150 mg N, "mg / L" and "ppm" are equivalents.
- 150 / 70 = 2.14 ppm N in 70 litres
- 10 / 2.14 = 4.667. I need to add 4.67g Solufeed 2 : 1: 4 to give 10 ppm N in 70 litres of water, and then to check
- Check = 4.667 * 150 = 700, 700 mg is the total mg N added and 700 / 70 = 10 mg / L (ppm).
- The tank is a nominal 180 litres and
- I want 10 ppm NO3
- Solufeed 2 : 1 : 4 is 15% nitrogen (N).
- There are 1000 mg in a gram, so 1 gram of Solufeed contains 0.15g or 150 mg N, "mg / L" and "ppm" are equivalents.
- 150 / 180 = 0.83 ppm N in 180 litres. To convert from N to NO3 we multiply by 4.43.
- 0.83 x 4.43 = 3.69, so 1 gram of Solufeed 2 : 1 : 4 supplies 3.69 ppm NO3
- 3.69 * 2.71 = 10 ppm
- You need to add 2.7g of Solufeed 2 : 1 : 4 to 180 litres to give 10 ppm NO3.