What Should Growers Look for at the Canadian Greenhouse Conference?

Two days on a trade show floor goes faster than anyone plans for. A grower walks in with four problems to solve. Then a conversation at the second booth runs long. By four o’clock the bag is full of literature and none of the four has an answer. Meanwhile the equipment decision that prompted the trip slides to next quarter. The same water quality issue then shows up again in the next crop cycle.

That pattern is avoidable, but only with a plan made before the doors open. This guide covers the logistics of the 2026 Canadian Greenhouse Conference and why water treatment keeps landing on grower shortlists. It also lays out a practical framework for evaluating ozone systems for greenhouse water treatment in the ten minutes you get at any given booth. The goal is simple. Leave the show with the answers you need to make the best possible investment in your water treatment, not a bag full of brochures.

When and Where Does the 2026 Show Take Place?

The Canadian Greenhouse Conference takes place on October 7 and 8, 2026 at the Niagara Falls Convention Centre in Niagara Falls, Ontario. This two-day event serves commercial growers of greenhouse vegetables, flowers, berries, nursery crops, and cannabis. Attendance reaches well beyond Ontario, drawing growers from across North America. The exhibit floor covers roughly 82,000 square feet and sold out well ahead of the event. Expect dense aisles at peak hours.

Two things are easy to miss in the schedule. First, an optional bus tour runs on October 6, the day before the main event, and that tour goes through Leamington. Second, the speaker program runs concurrently with the trade show. Hours spent in sessions are hours you are not on the floor.

Why Is Water Treatment on More Shortlists This Year?

Southwestern Ontario runs the densest concentration of greenhouse production in North America, and density changes the water conversation. When ranges sit close together and draw on the same surface and groundwater sources, pathogen pressure and nutrient loading stop being single-operation problems. Recirculation raises the stakes again. A closed loop saves water and fertilizer, but it also recycles whatever the loop failed to remove. Drain water disinfection has therefore moved from a nice-to-have to a line item.

Expansion adds a second pressure. Operations that added square footage over the last several years frequently kept the water treatment system that was sized for the original footprint. Consequently the treatment capacity lags the irrigation demand. Symptoms then appear as inconsistent disinfection during peak draw, not as an obvious equipment failure. Growers in that position arrive already knowing they have a problem. They are usually the best-prepared buyers on the floor.

Water supply is the third pressure. As the sector has grown, access to municipal water and reliable wells has become a real constraint on expansion. Producers are turning to new sources, including water drawn directly from Lake Erie. Surface water brings a different treatment challenge than municipal or well supply. It carries higher and more variable loads of organics, algae, and plant pathogens. Its quality also shifts with the season and with events like summer algal blooms. A treatment system that performed well on municipal water may not keep up once the source changes. Growers adding a new supply therefore need to size and select their treatment around the water they will actually be using.

What Should You Actually Evaluate at a Booth?

Every water treatment booth at the Canadian Greenhouse Conference will show clean water going in and clean water coming out. That claim tells you almost nothing, because the hard part is not disinfecting clean water. The hard part is holding a disinfection target in real water, at real flow rates, during the hours when everything irrigates at once. It also has to translate into healthier plants and better production. The table below reframes the common booth claims into questions that separate a specification from a sales line.

Sizing deserves the most attention, because it is where most disappointment originates. A properly specified system matches two numbers at once. The first is water volume at peak demand. The second is the ozone dose needed to hit the disinfection target in that specific water. Suppliers who size on acreage alone are guessing. Those who ask for a water analysis and a peak flow figure are doing the job. Purifico’s high volume ozone generator systems are specified this way whenever a water analysis can be taken. Likewise, the full range of ozone water treatment systems is organized around throughput rather than facility size.

Ask What It Does for the Crop

Clean water is only the means. The result growers actually pay for shows up in the crop. Ask each supplier what measurable difference their system has made at operating facilities. Useful answers point to root development, disease pressure, crop losses, or yield across several cropping cycles. Vague talk about healthier plants, with no numbers from real ranges behind it, is a warning sign. Additionally, ask how those results were tracked and whether the grower changed anything else at the same time.

Ask How It Held Up During an Outbreak

The toughest test of any water treatment system is a regional disease outbreak. When a waterborne pathogen moves through an area, every range drawing on shared water faces the same pressure at once. So ask how many facilities running the system still had waterborne disease problems, and what happened during the last outbreak nearby. Suppliers who are confident in their track record will answer that directly at the Canadian Greenhouse Conference. Hesitation on this question tells you more than any brochure.

How Do You Tell a Demo From a Real Result?

Ask directly what happens to performance as organic load rises, and whether the quoted output includes headroom for that. Additionally, ask how the system verifies it is dosing correctly rather than simply running. Continuous ORP (oxidation reduction potential) monitoring for water treatment is the practical answer. It measures the disinfecting condition of the water instead of the state of the machine.

Where Do Most Growers Get This Evaluation Wrong?

The most common mistake is comparing technologies before defining the problem. Growers arrive ready to debate ozone against ultraviolet against peroxide, and that debate cannot be settled in the abstract. The right method depends on water source, organic load, flow rate, and whether the loop recirculates. Existing equipment matters too. Working through the tradeoffs in comparing disinfectants for water treatment beforehand turns a vague technology argument into a specification conversation.

A second mistake is treating service as an afterthought. Equipment that performs well in a demo still needs parts, calibration, and a phone that gets answered mid-cycle. Purifico’s water treatment solutions across Ontario page sets out how that coverage works. A third mistake is skipping the reference call afterward, which is the single cheapest piece of due diligence available. Make sure other commercial growers using the equipment are genuinely satisfied with it.

What Should You Leave the Show With?

The most useful thing to bring home from the Canadian Greenhouse Conference is a clear picture of what each option would actually look like in your operation. For any supplier you are seriously considering, it helps to understand:

• How they would size a system for your peak water demand
• What water quality information they need from you to do that
• What ongoing maintenance and consumables look like, and what they cost
• How much space the system needs and how it fits into your existing irrigation setup
• What monitoring and data logging is included

After the show, the follow-up matters more than the booth conversation. Talking directly with a supplier’s existing customers is the fastest way to separate real results from sales pitches. From there, a water analysis and a detailed review of your project give each supplier what they need to show you their system in your operation, including its true cost and scope. Weighing the pros and cons of each technology and fact-checking vendor claims ahead of time also makes that process easier. By then, you will already have narrowed your options to the suppliers whose systems fit your operation.

Frequently Asked Questions

Sources