Nutrient heater

62 to 68 degrees for the maximum amount of oxygen water can hold. Get frozen water bottles ready to put into and around your rez. Save up to buy a chiller if your going to keep growing this way. When you keep the water cool it also helps keep the slime out of the system. Also try to use a clear nutrient to keep the roots nice white and vibrant. Dutch Nutrient Formula, D.N.F. was made specifically for hydroponics. It's the professional growers go to for water grows. Luck with your grow

I also don't understand why you would want such a thing. It is like Roberts said. Nute temp is best kept cool so it won't deteriorate fast. My dwc nute temp was around 16 degrees celcius in late bloom last grow and the ladies are frosty as f***. If nute temp goes to 30 degrees celcius you have more chance of rootrot and similar things. (that's why i add enzymes to counter it) But i you want it or think you need it, on the picture of the heater you can see two lines near the top, just beneath the plastic part where the wire goes in. That's how far it can be submerged, so the plastic part with the wire can't be submerged. Good luck!

Nutrition is best absorbed in hydroponic set up at cooler temps. So normally heaters are not required.

You can also use a aquarium heater. Their cords are are designed to be submerged and their temperature is adjustable.

Usually they are water proof for several feet. Just curious what kinda set up you have that warrants a reservoir heater?

Hello the wire can get wet a little like just few drops but don't submerge the wire in the water it will not like . it is shatterproof, shockproof and waterproof as it goes into the water. Hope it helps you. Good luck. Bye