This is thread is specifically for growers that do have low oxygen problems, have had low oxygen problems and growers that are concerned about the possibility of having low oxygen problems resulting in root death and disease.
FACT: Plenty oxygen = No Low Oxygen Problems
FACT: Professional hydroponic cannabis growers claim that having plenty oxygen is the most important nutrient in DWC pot grows. Many hobbyist have a far different opinion about the vital importance of O2.
FACT: Root rot and fungal outbreaks confirm, low oxygen crisis
FACT: DO Testing confirms or denies low oxygenation DX and totally eliminates worry and guessing.
Salifert O2 Test Kit – 50 DO Tests - $19.99 FREE SHIPPING TOO (site)
The vast majority of DWC hobbyist cannabis growers (for fun and profits) have never had any low oxygen disasters with their DWC cannabis crops. If you are one of the very few that have had or worry about low oxygen problems caused by low oxygen issues, this is a cheap way to make yourself a pure oxygen generator (electrolysis type) like this one:
O2 Grow oxygenator - (site) it cost $200 and change.
This oxygen generator will cost you only $8 and change – it generates pure oxygen too and you make it.
DIY - $8 Aquarium sterilizer - YouTube https://www.youtube.com/watch?v=jHg4Dx3rPSo