I asked this earlier but it was a dead thread. My Hanna checker is reading phosphates at .36 This whole time my PO4 has been reading high I've taken it as a false reading since I've read silicates can cause it to read high and I've been dosing silicates to cause a diatom bloom to compete with dinos. But Today after more reading I found somewhere it will only effect the hannah phosphate checker if silicates are higher then 10ppm. which my salifert kit barley shows 1ppm. Would you think my phosphates did skyrocket somehow or could it in fact be a false reading from the silicates?