Will ice help reduce heat stress?

I'm growing hydroponically. No symptoms of nutrient deficiency, no light stress, just heat stress. I put some ice on top of the DWC medium.

When I grew hydro and I needed to lower reservoir temps, I would freeze water in plastic bottles and put those in the reservoir.

I'm wondering if its the outside temperature or the reservoir. Outside temp is 80F and 60%RH.

Mr_X said:

I'm wondering if its the outside temperature or the reservoir. Outside temp is 80F and 60%RH.

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80F is no problem for air temp in the grow volume.

Can you post some pics and more info about your grow?

I’d be concerned about that for sure! I think I heard duke diamond ( I think ) on a potcast say that they do this as one of their methods of stress testing plants.

Maybe upgrade to some bigger outtake fans??.

2 plants in DWC.

Mr_X said:

I'm wondering if its the outside temperature or the reservoir. Outside temp is 80F and 60%RH.

Click to expand...

What temps are you seeing in the reservoir?

Tracker said:

What temps are you seeing in the reservoir?

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idk. if outside temp is fine, then its probably the reservoir. i just added ice. we shall see how the plant reacts to ice.

Mr_X said:

idk. if outside temp is fine, then its probably the reservoir. i just added ice. we shall see how the plant reacts to ice.

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I would recommend you measure the state of the system first, before you make a change action. Maybe res temp, but maybe not.

Clean looking setup BTW

i added ice. no sign of root rot. roots are white and healthy. leaves have no nutrient deficiency. yeah pretty sure its heat stress.