Caliban07
Aquarium Advice Addict
I'm not sure why but my water quality report is missing P, K, Zinc, cobalt and molybdenum so these will be excluded from this example.
The target ranges for weekly EI below compared with a weekly 50% water change which equals 40L. The micros are from CSM+B in this example.
Element EI Water change
Boron 75microg 240microg
Calcium 45mg 448mg
Copper 9microg 336microg
Iron 600microg 544microg
Mg 15mg 46.4mg
Mn 159microg 62.4microg
Nitrate 22mg. 45.2mg
As you can see a weekly 50% water change in most cases provides more nutrients than weekly EI targets and that is in my very soft tap water. Why do I need to dose anything at all.
Let's not for get EI targets are supposed to be non limiting i.e. 6WPG of light @ 30ppm co2
I have soil too....
My PAR isn't overly high 40-60 maybe.
If my tap water contains 10mg/l calcium (which it does) and I do a 40L water change technically i am adding 400mg of calcium. That should last the week right if EI (non limiting) targets 45ppm for the week.
Same with the other nutrients. Even nitrate @ 40L is equal to 45.2mg from the tap. EI targets 20-30ppm a week so I have more than this at the start of every week. That is without my fish load etc. Does this make sense or am I missing something?
The target ranges for weekly EI below compared with a weekly 50% water change which equals 40L. The micros are from CSM+B in this example.
Element EI Water change
Boron 75microg 240microg
Calcium 45mg 448mg
Copper 9microg 336microg
Iron 600microg 544microg
Mg 15mg 46.4mg
Mn 159microg 62.4microg
Nitrate 22mg. 45.2mg
As you can see a weekly 50% water change in most cases provides more nutrients than weekly EI targets and that is in my very soft tap water. Why do I need to dose anything at all.
Let's not for get EI targets are supposed to be non limiting i.e. 6WPG of light @ 30ppm co2
I have soil too....
My PAR isn't overly high 40-60 maybe.
If my tap water contains 10mg/l calcium (which it does) and I do a 40L water change technically i am adding 400mg of calcium. That should last the week right if EI (non limiting) targets 45ppm for the week.
Same with the other nutrients. Even nitrate @ 40L is equal to 45.2mg from the tap. EI targets 20-30ppm a week so I have more than this at the start of every week. That is without my fish load etc. Does this make sense or am I missing something?