You could use an Sunleaves AquaChill 132 gal, 1/10 HP like this one to cool your nutrients reservoir to an acceptable range.
Sunleaves AquaChill 132 gal, 1/10 HP - Perfect Gardens
Sunleaves AquaChill 132 gal, 1/10 HP - Perfect Gardens
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The chop pictures look good.
Looks like the wifey's Amsterdam seed company.
No frills packaging.
No instructions.
Arrived 7 days after order.
Did you get 20 free seeds?
Just something to run up the flagpole and see if anyone salutes it...
Ever heard of a "Peltier" device? Basically, it's a solid-state heat pump. 35mm by 35mm by 1mm thick, with two wires. Power it up with 12 volts, one side gets hot, the other side gets cold. Reverse the polarity of the power, and the direction of the heat reverses. Solder a couple of 'em between a coil of copper tubing and an aluminum heat sink, hook up a small pump, and pump cooled rubbing alcohol thru a coil of copper tubing in your reservoir. Bingo! Cooled nutes. Easy as pie to wire in a thermostat for it.
Many, many moons ago, I built a home made CCD camera for doing astro-photography, and that's how you cool a CCD chip. With a Peltier, a pump, and a res of rubbing alcohol. Cuts down on "thermal noise," a big problem for astro-photographers using CCD cameras. Paid $5 for a Peltier chip at a surplus electronics supplier. When I built mine, I don't think I spent $50 on the whole cooler, including the 12V gel-cell to power it.
Wouldn't be a bit surprised to find out that's what's in that $350 device. Coil of tubing, a couple of Peltier chips, and a power supply. You supply the pump. Wow. Am I ever in the wrong business.
Like I said, just something to run up the flagpole...
After-thought... Make the copper tubing on the Peltier larger, and pump your nutes straight thru it. No alcohol. (My mind was locked on the cooler I built for the CCD cam.)