One cover for every pond and tank in your plant.
Covex® is a hexagonal floating cover that seals the liquid-air interface. On process water, cooling basins, fire water and storage ponds it cuts evaporation, reduces heat loss, suppresses odor, blocks algae, and keeps birds and wildlife off your open water.
It all starts at the liquid-air interface.
Wherever process water, cooling water or stored water meets the air, the same things happen across the whole plant: water evaporates, heat escapes, light feeds algae, odors drift to the fence line, and the open surface draws in birds. Every uncovered pond and open tank is a silent, daily loss.
Evaporation & heat loss
Open process and storage ponds lose water to the air every day, and heated or cooling water loses temperature through the surface. Both translate into more makeup water and more energy to hold the plant at setpoint.
Algae, biofilm & odor
Sunlight on the open surface drives algae and biofilm that clog pumps, filters and intakes and force extra treatment. On organic-loaded water, the same open surface lets odor reach nearby communities.
Wildlife & housekeeping
Open water attracts birds, mosquitoes and wildlife to ponds that may be chemically loaded or simply off-limits. It is a recurring environmental and housekeeping finding on plant inspections.
A cover that self-installs and self-adjusts.
The hexagonal HDPE modules float, interlock, and settle on their own to the reservoir level. They require no structure, anchoring, or maintenance. Each unit carries water ballast that keeps it in place even in extreme wind.
Less evaporation
The physical barrier of the hexagons cuts the mass exchange between liquid and air, preserving stored volume and reducing makeup water across process and storage ponds.
Reduces heat loss
The air chamber inside each module acts as an insulating barrier, cutting heat loss from heated process water and delaying freezing in cooling and fire water basins.
Stops algae & biofilm
By blocking light, it inhibits photosynthesis in the stored water, protecting quality, pumps and intakes, and reducing chemical dosing and odor.
Virtually eliminates the open surface
With no visible reflective surface, birds and wildlife are far less likely to detect the pond, and mosquito breeding is suppressed.
The same cover, the value that matters to you.
The physics of the liquid-air interface is universal, but the priority changes with the pond and the fluid. Find your application below.
Process Water
- Evaporation control that preserves stored volume and reduces makeup water in process and balancing ponds.
- Heat-loss reduction on heated process water, cutting the energy needed to hold temperature.
- Algae, biofilm and odor control that protects water quality and the fence-line community.
- HDPE formulated for ESCR, resilient against chemically loaded process water.
Cooling & Fire Water
- Algae and biofilm control that keeps cooling and fire water clean and protects pumps, intakes and heat exchangers.
- Evaporation control on open basins, reducing makeup water and chemical dosing.
- Freeze delay in cold-climate plants: water stays available longer and intake infrastructure stays protected.
- Passive performance with no power and no devices to maintain.
Storage & Reuse
- Evaporation control for raw, treated and reuse water storage across any industry, recovering water and protecting supply.
- Algae and odor control that preserves stored water quality and reduces downstream treatment.
- Wildlife and mosquito exclusion on open ponds and tanks, a recurring inspection finding.
- Dust and contamination barrier that keeps stored water clean.
Where temperature matters, the surface is where you lose it.
Covex® regulates water temperature in both directions: by day it blocks solar radiation and keeps the pond cooler, cutting evaporation when it peaks; by night it retains heat and slows cooling, protecting heated process water and delaying freezing in cooling and fire water basins.
By day, it blocks the sun and keeps water cooler.
With High ambient temperatures, the hexagons blocks solar radiation before it heats the water. The covered surface stays several degrees below the uncovered one.
By night, it retains heat and delays freezing.
In heated process water, the heat lost at night must be replaced with energy. In cooling and fire water basins, falling temperature risks freezing the surface and threatening availability. Against a -5°C environment, Covex® keeps the water up to 5.2°C warmer than the uncovered surface during the first hours of the night.
The effect is decisive where there is freezing risk: uncovered water reaches 0°C at 7.5 hours, while under Covex® the freezing point is delayed to 12 hours, 60% more time.
Save water and energy, stay clean, keep operating.
Across any industrial plant, the open water surface is where you lose water, lose heat, grow algae and attract problems. Covex® provides a continuous physical barrier that seals 98% of the surface, turning a daily loss into measurable savings and a cleaner, lower-maintenance operation.
Lower water and energy bills
Up to 97% less evaporation means less makeup water; reduced heat loss means less energy to hold temperature. The cover pays back through the resources it stops you from wasting.
Cleaner water, fewer chemicals
Blocking light stops algae and biofilm at the source, protecting pumps, intakes and heat exchangers and cutting the chemical dosing and labor needed to keep ponds in spec.
HDPE grade for harsh fluids
High-density polyethylene withstands contact with chemically loaded and process water. The formulation prioritizes environmental stress cracking resistance (ESCR), the critical factor in industrial water chemistry.
Zero maintenance, automatic adjustment
The hexagons rearrange themselves as the level changes. There is no structure to inspect and no anchors to fail, just a permanent cover that works on its own.
An open industrial pond is a standing invitation: to birds, mosquitoes, odor complaints and inspection findings that no plant wants on the record.
Across industries, open process and storage ponds attract birds and wildlife, breed mosquitoes, and let odor drift to the fence line. The usual responses, fencing, netting, dosing, hazing and covering the surface, vary in effectiveness, and active devices depend on equipment that can fail, drift or lose effectiveness over time.
Data measured on site, not catalog promises.
Trusted across industry.
More than 25 years sealing open water and process ponds across demanding industrial environments, from high-altitude desert to sub-zero climates.
Let's do the numbers.
Tell us about your pond or tank and we will provide an estimate of water savings, energy savings, and payback for your site.
A specialist will review your site data and contact you with a savings and payback estimate.