Elemental Solutions

Engineer a Stable Root Zone, Not a Guessing Game

Air temperature gets most of the attention in a grow room, but water temperature drives root health just as directly. Reservoirs left to fluctuate with ambient heat lose dissolved oxygen fast, and warm, stagnant water is exactly the environment pathogens like Pythium thrive in. Active temperature control removes that variable entirely.

Precision Cooling, Built for the Reservoir

Both chillers use smart temperature control technology to hold water at a set point with minimal user intervention, turning an environmental variable into a fixed constant.

• Consistent Root-Zone Temperature: The 1/4 HP model pulls reservoir water down from 82°F to a steady 61°F over a 20-hour cycle, holding that line even as ambient room temperature climbs.
• Scalable Cooling Power: Larger systems draw on the 1/2 HP model, rated for reservoirs up to 132 gallons and built with a higher-capacity compressor for commercial-scale demand.
• Circulation That Keeps Pace: The companion 793 GPH pump moves chilled water through the system fast enough to prevent thermal stratification, so cooling reaches every corner of the reservoir instead of just the surface.

Sizing the Right Chiller for the System

Matching horsepower to reservoir volume is the difference between a chiller that keeps up and one that runs constantly trying to catch up.

• Mid-Size Reservoirs (Up to 80 Gal.): The 1/4 HP chiller is sized for standard deep water culture systems and single-tote setups, delivering dependable cooling without oversized power draw.
• Commercial & High-Volume Setups: The 1/2 HP chiller supports reservoirs up to 132 gallons, the range typically found in multi-bucket RDWC systems where a single central reservoir feeds several plant sites.
• Reservoir Infrastructure: Neither chiller does much good without a stable tank to cool — check collapsible reservoir tanks sized to match the chiller's rated capacity.

Getting the Most from a Chilled Reservoir

A chiller solves temperature, but a few companion habits keep the whole root zone performing at its best.

• Add Active Aeration: Cold water holds more dissolved oxygen than warm water, but circulation still matters — pairing the chiller with air stones keeps oxygen distributed evenly instead of settling near the surface.
• Position the Pump Correctly: Flow rate on the 793 GPH pump depends on tubing length and the height of the chiller relative to the reservoir, so route lines as directly as possible to protect real-world throughput.
• Watch the Whole Environment, Not Just the Water: Root-zone temperature is one half of the plant's climate equation — dialing in air-side conditions matters just as much for consistent transpiration and uptake.

Root-zone temperature is easy to overlook until it becomes a problem, and by then the damage is already done. For a deeper look at how water and air conditions interact to affect plant stress, see the VPD chart and calculator guide.

Frequently Asked Questions