LakeTech

LakeTech Top/Bottom

$3,990.00 USD

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Bottom depth 5 feet deep 10 feet deep 20 feet deep 40 feet deep 50 feet deep

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Complete top and bottom dissolved oxygen monitoring system for lakes and ponds. LakeTech Top/Bottom provides continuous readings from an RDO Blue probe near the surface and a second RDO Blue probe at the selected depth, with data transmitted through VuLink.

Why two depths: A healthy surface reading does not guarantee healthy water below. Comparing the top and bottom sensors helps reveal stratification, catch deep-water oxygen loss early, protect fish habitat, and confirm that management is reaching the lake bottom. Maintaining adequate oxygen at depth preserves more usable habitat and helps reduce low-oxygen fish-kill risk.

Complete system includes:

1 LakeTech Buoy and Hardware assembly
1 VuLink Cellular Telemetry Device
1 High-Gain Whip Antenna
1 Lithium Battery (LiMnO2)
1 Cable Splitter
2 RDO Blue dissolved oxygen and temperature probes
1 one-foot Twist-Lock cable for the top probe
1 Twist-Lock cable for the selected bottom depth

Choose a 5, 10, 20, 40, or 50-foot bottom sensor depth. Each variant is priced as a complete, fully built system.

LakeTech Top/Bottom $3,990.00

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Whole-water-column insight

One lake. Two very different oxygen stories.

A healthy surface reading does not guarantee healthy water below. In a stratified lake, warm surface water can stay oxygenated while deep water is cut off from mixing and steadily loses dissolved oxygen. Measuring both depths reveals the conditions a single surface reading can miss.

Surface layer Top sensor Dissolved oxygen + temperature

Thermocline Limited mixing The upper and lower layers can behave differently

Deep water Bottom sensor Tracks oxygen loss near the sediment

Summer stratification can isolate cool bottom water for weeks or months. LakeTech Top/Bottom tracks both ends of the water column continuously, so you can see when the two layers begin to behave differently.

Top

What the top tells you

The surface responds quickly to wind, air exchange, sunlight, photosynthesis, weather, and algae. It is essential context, but it can look stable even while oxygen is disappearing below the thermocline.

Bottom

What the bottom tells you

Deep water shows the combined effect of stratification, microbial decomposition, and sediment oxygen demand. A falling bottom trend is often the earliest warning that usable fish habitat is shrinking.

Compare

What the comparison tells you

The difference between top and bottom shows where oxygen loss begins, how quickly it is progressing, and whether aeration or another management response is reaching the deepest water.

Protect the refuge below

Why bottom oxygen matters for preventing fish kills

Fish need both suitable temperature and enough dissolved oxygen. When bottom water becomes oxygen-poor, fish are compressed into a smaller band of habitat near the surface. A turnover, storm-driven mixing event, algal crash, or sudden increase in oxygen demand can then leave too little refuge.

Maintaining adequate oxygen near the bottom with a properly designed aeration or lake-management plan preserves more usable habitat and reduces fish-kill risk. Continuous top and bottom data provides early warning, helping you respond before deep-water conditions become critical and verify that the response is improving the full water column.

The management advantage

Two depths turn a snapshot into a diagnosis: see the healthy surface, catch hidden bottom depletion, and act while there is still time to protect fish and the lake ecosystem.