Just saying most problems in dwc come from hot water and the ph being off if you have both of those right it’s almost impossible to fail.
Both systems average temperate is between 73-74, all depending on the temperature inside my home, which stays at 70 no matter what lol.
This picture is from my dwc which I have no issues with and sits up higher closer to the light. The rdwc holds a bit more water in the tent, causing it to stay about .5 degrees higher. I know the DWC bucket is far more light proof than my rdwc, which is why I say light leaks and algae, or root rot whatever it may be.