i hadnt thought about that before, but water changes actually would take some of the still-present K out of the water. my current calculations have me adding 20ppm of K per week @ ~7ppm 3x each week. If I am doing 3 30% water changes a week (for my Discus), i should be adding more, correct? my water change schedule is on Tuesdays, Thursdays, and one of Saturday/Sunday. Do you think the plants consume the K fast enough that just adding 1/3 after each water change is fine? Or should I make up for the additional amount lost?
450g Planted Discus Tank - Work in Process!