Late week 3 was the coming back of PH issue, both cheap chinese pen were calibrated and both shows the same result in all 3 PH calibration solution, although, greatly inaccurate in the real world. Apera ph20 came to the rescue. The Jack Herer will soon be ready for cloning test, but I'm still waiting for parts to build the aerocloner. New tent (BloomGrow 48x24x72) and light (Meijiu 240watts) temporarily set up, still missing a second exhaust fan.