HI have a question. I USED MY API KIT. As you can see my ph is 6.0. According to my book angels like 6.5 to 6.8. I talked with the store they said 6.0 is fine. That is what there tanks are set at and the same is said for other stores in my city. No my nitrate s are off alittle too. No matter what I try I can not get the ph up. System is a fluval 305 but retrofitted it like a video on you tube. Light is a white. With blue and a few reds leds. No plants or wood. Just 2 angels, 2 mollies ( had 6 but they have neen dying). 1 Chinese algae eater. He would chase the mollies all the time. Now today my angels did not eat. Neither one. Temp is in the upper green on a floating thermometer. Ideas anyone????