Recent content by Wasafooser

I'm at a friend's house. He has a 70 gallon tank with some neons, white clouds, and other smaller tetras. Did a water change and gravel siphon a month ago. We just checked the ph with a blue lab ph pen. Showed tap water to be 6.5 but tank reads 3.7. I have had fish for over 50 years, ran a...