FERMENTED RED CABBAGE SAUERKRAUT

need a pH indicator pen? 
https://www.grainger.com/product/45MH99?gucid=N:N:PS:Paid:GGL:CSM-2295:4P7A1P:20501231&gclid=Cj0KCQjwla-hBhD7ARIsAM9tQKs3-uzO-4sBu8aHklmP8z4f4dkUr7p5hm-WPLer4bp9gVOxBhiPLOwaAnjnEALw_wcB&gclsrc=aw.ds

need an Easy Fermenter?
https://www.amazon.com/Easy-Fermenter-Wide-Mouth-Weights/dp/B0789QYV52/ref=asc_df_B0789QYV52/?tag=hyprod-20&linkCode=df0&hvadid=242004782611&hvpos=&hvnetw=g&hvrand=14175495670136405888&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=1012938&hvtargid=pla-407726330145&psc=1