Vero29's @ 25watts in parallel grow

Bonjour
75ºF is 23.8ºc...so a very good temp...no?
CU

littlejacob said:

Bonjour
75ºF is 23.8ºc...so a very good temp...no?
CU

Click to expand...

He was talking about his water temperature, so 75F is way too high. (Because of low levels of dissolved oxygen and pathogens such as pythium's (root rot/slime's) preference for that temperature.)

From Just4Growers on ideal DWC water temperatures: "62-68°F (17-20°C). Above 72°F (21°C) and dissolved oxygen (DO) dips too low. Below 60°F (16°C) and plants tend to slow their metabolism as they "think" the season is changing. Some growers use this to their advantage and reduce nutrient temperature towards the end of the flowering stage to aid in ripening."

CocoTwisty said:

He was talking about his water temperature, so 75F is way too high. (Because of low levels of dissolved oxygen and pathogens such as pythium's (root rot/slime's) preference for that temperature.)

From Just4Growers on ideal DWC water temperatures: "62-68°F (17-20°C). Above 72°F (21°C) and dissolved oxygen (DO) dips too low. Below 60°F (16°C) and plants tend to slow their metabolism as they "think" the season is changing. Some growers use this to their advantage and reduce nutrient temperature towards the end of the flowering stage to aid in ripening."

Click to expand...

Bonjour
Thank you for clarify this...and sorry for my bad understanding!
Very interresting about nutes temps...I knew tº is a concern in organic but I didn't known it was the same with chem nutes!
And below 60º it is very cold for plant...same for roots I agree of course
But I never thought about cool my water to help senescence...I may try that since my plants are still very green and I have maybe 3/4 weeks left...I want to say flush in 2 weeks but I only add tap water 48h in a bucket and molasses 1/week (1 full tspoon/4gl) if it still very green the last 10 days I will "wash" my soil and see!
Have a great day ★