Advertise On Marijuana Passion

Does water temp matter that much?

RonnieB

Well-Known Member
Joined
Sep 13, 2020
Messages
409
Reaction score
407
Ive been thinking about doing a hydro rig. Bubbleponics or something like that. But I read the water needs to be pretty cool. Like 60s-75 degrees. If I did that, my electric bill would be through the roof. Im assuming cool water helps with root health and bacteria problems
 

WeedHopper

Moderator
Staff member
Moderator
Joined
Nov 7, 2008
Messages
13,657
Reaction score
10,913
Location
Dallas
Yep,,ive grown in DWCs many times. Need to keep the solution around 70 degrees. If it gets to warm your roots will start to yellow and slim can also get on your roots. I had to keep frozen water bottles in mine. Was a pain in the ass because i didn't have a chiller.
 

RosterTheCog

Some Folks call it a Sling Blade mmhhmmmm.
Joined
Aug 6, 2020
Messages
3,500
Reaction score
10,463
There are things like hydroguard (spell) that will help but yes I also recommend a chiller if you go that route. Freezing old milk bottles gets old real fast
 

RonnieB

Well-Known Member
Joined
Sep 13, 2020
Messages
409
Reaction score
407
Yeah thats what I was afraid of. Guess it'll be a bit before I do this. My buddy made his own chiller with 50 feet or 25 of garden hose coiled up in a dorm room refrigerator. He coiled it up inside the fridge so the water would spend most of its time in the unit and when it came out the other end it was 67-70 degrees lol
 

Cannagrammy

Well-Known Member
Joined
Dec 6, 2018
Messages
479
Reaction score
1,441
The temperature isn't as much of an issue as the fact that when water gets higher in temperature, it holds much less oxygen. I've seen a few growers compensate for higher temps with more oxygen, but that can be a catch 22 if you use pumps and are in the grow space, they can create heat and the battle rages.

I would suggest trying it in winter before you go through the expense of a chiller.
 

Growdude

I am the Smo King
Joined
Oct 25, 2006
Messages
4,579
Reaction score
3,235
as the temp rises it only can hold so much DO "dissolved oxygen" no matter how much air or bubbles you add.
 

RonnieB

Well-Known Member
Joined
Sep 13, 2020
Messages
409
Reaction score
407
Ill definitely need a chiller. The summers here are brutal. I have air conditioner in my grow room but that really racks up my electric bill if I want to cool water down that much. Its not so bad keeping the grow room 78-80 degrees. I guess if I wanna grow hydro that its gonna have to wait or as suggested do a winter grow. Thanks for all the input guys and gals.
 

WeedHopper

Moderator
Staff member
Moderator
Joined
Nov 7, 2008
Messages
13,657
Reaction score
10,913
Location
Dallas
Texas heat is why i switched to soil instead of using DWCs. More forgiving. Cant correct problems as fast with soil as you can Hydroponics,, but that's okay.
 

Latest posts

Top