What causes a stuck fermentation in home beer brewing?

What causes a stuck fermentation in home beer brewing? Chapters: 0:00 - Intro 1:04 - Dead or Non-Viable Yeast 1:49 - Under Pitching Yeast 2:13 - Too hot or too cold when pitching yeast 3:09 - Not enough nutrients in the wort 3:34 - Not enough O2 for yeast growth stage 4:05 - High Temps during fermentation 4:25 - Low Temps during fermentation 4:42 - Flocculating temps - up and down. 5:12 - Low Attenuating Yeast - False Stuck Fermentation. 5:49 - Water without minerals 6:15 - Chlorine in your water 6:43 - Preservatives 7:16 - Open Fermentation 8:29 - Thank You. Special Deal Link - https://go.referralcandy.com/share/TC... Discount Code to use at www.EasyDens.com FRIEND-TCMXNSW Bitter Reality Brewing Amazon Shop https://www.amazon.com/shop/bitterrea... Tilt Hydrometer during fermentation https://www.homebrewing.org/Red-Tilt-...