Yes, I have Hannah's, salient for MAG and cheap APIs. The hanna checker was saying the phospates were 0.00 ppm. The tank has been up for a year. The torch was doing well until I started trying to lower the phospates. Now I the phosphates and red algae to a minimum, but everytime I change the water the brown (diatoms) come back. I also have been dosing macobacter 7.I was having the same issues with my torches but I recently bought a test to help understand my water more. Do you have any test?