The HYDROS Temperature Sensor is an easy and affordable way to prevent your aquarium water from becoming too cold or too hot. It monitors the water temperature in your aquarium so you can keep it within the safe zone for fish, coral, and inverts. The sensor plugs into any Sense Port on a HYDROS device (like the Control 2 or Control 4) and does not require any additional power source.

The way it works is easy: just place the sensor inside your aquarium or sump. It can be mounted to surfaces up to 1/2" thick. There is a magnetic coupling that will sit outside your tank or sump to keep the sensor securely in place. You can configure the HYDROS app so that if the water temperature is higher than 82F or lower than 78F (for example), it can send you a mobile alert to let you know. You can also set it up so that outlets that have a heater, chiller, or fan plugged into them turn off when the temperature is outside the safe zone. Your heating and cooling equipment must be plugged into a HYDROS power source, like the Power 4 power strip or Smart Plug, for this sort of automation to occur.

The HYDROS Temperature Sensor contains no moving parts that can fail. It's extremely tiny: it's a little over a half-inch thick with a circumference the size of a US penny. The magnet side measures only 1/4" thick. The sensor is easy to place, easy to move, and easy to clean. It provides peace of mind that your aquarium water temperature will never drift outside optimal ranges for aquatic life.

The HYDROS Temperature Sensor is an Official HYDROS Accessory manufactured by AutoAqua in Taiwan. Creators of the Smart ATO Micro, AutoAqua is one of the most well-known and trusted makers of aquarium automation systems in the hobby today. CoralVue has thoroughly tested the Temperature Sensor to ensure seamless compatibility with the HYDROS platform. The product development team at CoralVue engineered the sensor so it connects with any HYDROS Sense Port using its aviation-style plug for safe operation. No additional power source is needed to run the sensor. Keep your aquarium water temperature in the safe zone with the HYDROS Temperature Sensor.

HYDROS Temperature Sensor Specs

• Size:
  • Diameter - 0.75"
  • Sensor - 0.55" thick
  • Magnet Mount - 0.25" thick
• Max Mounting Thickness: 1/2"
• No Moving Parts
• Magnetic Attachment
• Protects your aquarium from unsafe water temperatures
• You can use it to shut off a heater, chiller, or fan when the water temperature gets too hot or cold
• You can set it up so that you'll receive a mobile alert of your water temperature drifts outside the safe zone
• For freshwater and saltwater aquariums
• The HYDROS Temperature Sensor uses a GX12 aviation-style connector so the Control 2 and Control 4 maintain their IP65-rating (dust-tight and protected from water spray at any angle).
• Powered, monitored, and controlled by plugging into a Sense Port on the HYDROS Control 2 or Control 4. No additional power cord is required.
• Manufactured by AutoAqua, an official HYDROS Technology Partner.

FREE SHIPPING OVER $119!*

- does not apply to livestock -

$11.99 FLAT RATE FOR LESS THAN $119.00 - CANADA WIDE!

*EXCEPTIONS:

• Any heavy or bulky items will incur a 100% charge of the actual shipping cost (valid for both Canada and the US). Heavy bulky items include (but are not limited to): salt, dry rock, sand, chillers, sumps, aquariums, stands, and some filter media.
• Frozen or perishable food can only be shipped via UPS Express. We have discounted the express shipping of these items to help the hobbyist out.
• Livestock is covered by a different shipping policy. To view the policy and further information regarding shipping livestock, click here.

GENERAL NOTES:

• We always make our best effort to ship your order via the carrier chosen during the check-out process; however, for some multi-piece shipments and/or remote destinations, we must reserve the right to use another carrier at our discretion (and without prior notice). If you require notice of any changes made to the carrier, please mention it in the special instructions during check-out.
• Upon request, we will ship your dry goods as per your specifications (courier, airlines, on your account, etc.).
• Quoted rates are the carriers live discounted shipping rates after adjusting for any/all shipping promotions.

Return Policy — Aquarium Equipment & Supplies

• All returns and/or exchanges must be made within 30 days of receipt of product.
• Before returning or exchanging any goods, you must contact J&L Aquatics to obtain a Return Merchandise Authorization (RMA). Items returned without prior authorization will be declined.
• Returned items must be unused, in original packaging, in as-new condition, and in perfect sellable condition. All returns are subject to inspection upon receipt.
• A 15% restocking fee applies to all online returns. This fee includes the cost of outbound shipping.
• Customer is responsible for return shipping costs on standard returns.
• Order cancellations made before shipping are not subject to a restocking fee.

Non-Returnable Items

• Special order items
• Clearance / final sale items
• Open box items

Regular sale items (non-clearance) are returnable within the 30-day return window, subject to our standard return conditions.

Defective, Warranty & DOA Items

• If you receive an item that is defective, not working, or dead on arrival (DOA), please contact us as soon as possible.
• Confirmed defective and warranty returns have no restocking fee and no Affirm fee. Customer does not pay return shipping — J&L Aquatics will provide a prepaid return label.
• All defective claims are subject to inspection. Items showing signs of customer damage, improper installation, or misuse are not covered under warranty.

Carrier Damage & Lost in Transit

• If your order arrives damaged by the carrier or is lost in transit, please contact us right away with:Photos of the damaged product (if applicable)Photos of the damaged box/packaging (if applicable)A description of the issue
• Important — Do not throw out any packaging! Please keep all original packaging, boxes, and packing materials. These are required to process your claim. Discarding packaging may affect our ability to resolve your claim.

High-Value Items ($100+)

• For items valued at $100 or more, customers must provide a return tracking number before a replacement will be shipped.

Affirm & Financing Orders

• Affirm or similar financing orders that are cancelled or returned in-store are subject to a 5% service charge. This covers the processing fee charged to us by the financing provider.
• The Affirm service charge does not apply to confirmed defective or warranty returns.