I was checking with the strips. It has been pretty consistent around 7.5 and the tank has been running alittle over a month cycled from media from one of my other established tanks. 55g moderately planted. Not dosing co2 just the 5ml dose of flourish daily. This is when I started noticing the drop. Almost to 6.5. My fish started looking alittle sluggish and that was the only I was doing differently. So I backed off dosing everyday and did a couple of water changes and things are back to normal and my fish are acting back to normal. Idk:/