I thought from the instructions that it is suggesting to first test the level of phosphate, then assume 2-4 times that is in the sand, so if the PO4 is high +3ppm you divide the recommended aquarium size by 2-4 times. Making the recommendation 100g for 25-50G ?
Last edited by FitoPharmer; 01-26-2013 at 04:41 PM.
|