rick4him;29148 said:I know this is hard to tell, but how much K is normally absorbed during the day?
How many ppm of "k" do you normally add to a tank?
detlef;29218 said:As far as K+ Tom found 0,25 to 1ppm of daily uptake. I measured a mean 0,9ppm uptake per day depending on plant growth, density and species.
Edward over at APC recommends about 1,4ppm of daily additions whereas Amano adds more than double of that. His recommendation hovers around 3,4ppm/d.
K+ levels should not be critical at all as long as there is "enough" for the plants all the time. I estimate that Kalium should always be kept above 10ppm. Though, ten times more of that was found not to be detrimental.