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water whats an ideal water temp for an n.f.t

Spokanepepperman

Spokanepepperman

So finally got off my butt at am going to revive my old grow rails and try my luck with peppers in them. My question is what is the ideal water temp for my reservoir, I've grown other things in these rails but very finicky plants so how do peppers fair in warm water temps. I use reverse osmosis filtered water and my water temps usually run in the high 50's to mid to high 60's any help is appreciated.
 
 
 
Most growers are familiar with the need to have some form of aeration in their nutrient solution - whether they be in a recirculation or a media based system. In NFT systems, this is often accomplished with the use of an air pump or by allowing the nutrient to fall back into the reservoir, thus introducing oxygen. However, the effect of temperature of the solution on the dissolved oxygen levels and on root respiration rates also needs to be taken into account. As the temperature of your nutrient solution increases, the ability of that solution to 'hold' dissolved oxygen decreases. For example, the oxygen content of a fully aerated solution at 10°C (50° F) is about 13ppm, but as the solution warms up to 20° C (68° F) the ability of the liquid to 'hold' oxygen drops to 9 - 10ppm, by the time the solution has reached 30° C (86° F), then it's only 7ppm.
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Lower temps deliver more oxygen to the plants.  I try to keep my res temp at around 65° F.
 
Thanks guys I used to have major issues with herbs and root rot from funky temp swings so I reperposed a large glycerin coil chiller then had stable temps so I'll try and keep em right at 60ish. Thanks again I didn't think it had that big a impact on the total ppm. But reading that I'd does almost explain the nutrient lock issues.
 
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