7/24/2026 - By Harrell's

Water management is one of the most important aspects of maintaining healthy, high-performing turf. Whether you're managing a golf course, sports field, or commercial landscape, inconsistent moisture levels can lead to localized dry spots, poor turf quality, increased disease pressure, and inefficient water use.

That's where wetting agents come in.

Wetting agents help improve how water moves through and is retained within the soil profile, allowing turf managers to maximize irrigation efficiency and maintain more consistent growing conditions. However, not all wetting agents are designed to solve the same challenges.

This guide breaks down the differences between six proven wetting agent solutions from Harrell’s HydroMAX® product line: Hydro-Inject®, Hydro-Cure®, Hydro-90®, Symphony®, Fleet® 100, and SurfaceRx™, to help you choose the right product for your turf management program.

Understanding Wetting Agents

Wetting agents are soil surfactants that reduce the surface tension of water, allowing it to penetrate the soil more effectively. By improving water movement and distribution, wetting agents can help:

Improve water infiltration

Reduce localized dry spots

Enhance soil moisture uniformity

Increase water-use efficiency

Support healthier root development

Improve turf quality during environmental stress

All six products discussed here utilize EO-PO (ethylene oxide-propylene oxide) block copolymer technology, a proven chemistry for improving soil-water relationships. While they share a common foundation, each product is formulated to address specific moisture management challenges.

Hydro-Inject®: Fast Water Infiltration for Immediate Results

When rapid water penetration is the primary objective, Hydro-Inject® is designed to get water moving quickly into the soil profile.

Key Benefits

Promotes water infiltration

Helps alleviate localized dry spots

Delivers rapid soil penetration

Ideal for curative applications

Best Use Cases

Hydro-Inject® is an excellent choice when turf areas are struggling with water repellency or dry spot conditions that require immediate attention. With a residual activity of approximately 15 days, it provides quick performance when fast results are needed.

Application Rate

1–2 fl oz per 1,000 sq. Ft.

Residual Activity

7-15 days

Hydro-Cure®: Balancing Infiltration and Moisture Retention

Hydro-Cure® provides a more balanced approach to moisture management by promoting both water infiltration and soil moisture retention.

Key Benefits

Improves water movement into the soil

Helps retain moisture within the root zone

Supports more consistent turf performance

Best Use Cases

Hydro-Cure® works well in routine moisture management programs where both infiltration and retention are important. Turf managers seeking improved moisture consistency without sacrificing drainage often find Hydro-Cure® to be a versatile solution.

Application Rate

5–8 fl oz per 1,000 sq. ft.

Residual Activity

Approximately 15 days

Hydro-90®: Long-Term Moisture Management

Hydro-90® is designed for turf managers seeking extended performance and improved soil moisture retention over longer intervals.

Key Benefits

Promotes water infiltration

Enhances soil moisture retention

Extended residual activity

Best Use Cases

Hydro-90® is ideal for preventive moisture management programs, especially in areas prone to recurring dry spot issues. Its residual performance exceeds 30 days, helping maintain consistent moisture conditions while reducing application frequency.

Application Rate

3–8 fl oz per 1,000 sq. ft.

Residual Activity

Greater than 30 days (rate dependent)

Symphony®: Consistent Moisture Performance

Symphony® provides a balanced moisture management solution focused on maintaining consistent soil moisture levels throughout the rootzone.

Key Benefits

Improves infiltration

Enhances moisture retention

Supports long-term turf quality

Best Use Cases

Symphony® is well-suited for golf course fairways, sports fields, and other high-traffic turf areas where maintaining consistent moisture availability is critical for performance and playability.

Application Rate

2.5–5 fl oz per 1,000 sq. ft.

Residual Activity

Approximately 30 days (rate dependent)

Fleet® 100: Flexible Water Management

Fleet® 100 offers a flexible approach to moisture management with a broad application range and long-lasting performance.

Key Benefits

Promotes infiltration

Supports moisture retention

Provides extended residual activity

Best Use Cases

Fleet® 100 is an excellent option for turf managers looking for flexibility across varying site conditions. Its wide application range allows users to tailor programs based on seasonal demands, soil conditions, and irrigation practices.

Application Rate

2.5–8 fl oz per 1,000 sq. ft.

Residual Activity

Approximately 30 days (rate dependent)

SurfaceRx™: Advanced Moisture Management with Osmotech™ Technology

SurfaceRx™ combines proven EO-PO block copolymer technology with Osmotech™ technology to provide comprehensive moisture management.

Key Benefits

Improves water infiltration

Enhances moisture retention

Utilizes Osmotech™ technology

Supports improved water-use efficiency

Best Use Cases

SurfaceRx™ is designed for turf managers seeking advanced moisture management and improved irrigation performance. It can be particularly valuable in challenging environments where water quality, environmental stress, and moisture consistency are ongoing concerns.

Application Rate

2.5–8 fl oz per 1,000 sq. ft.

Residual Activity

Approximately 30 days (rate dependent)

Comparing Your Options

Selecting the Right Wetting Agent

The best wetting agent depends on your specific goals:

Choose Hydro-Inject® when rapid infiltration and dry spot correction are your top priorities.

Select Hydro-Cure® when you need a balance between water movement and moisture retention.

Use Hydro-90® for long-term moisture management programs requiring extended residual activity.

Consider Symphony® when maintaining consistent moisture levels is critical to turf performance.

Turn to Fleet® 100 when you need flexibility across a range of environmental conditions.

Choose SurfaceRx™ when advanced moisture management and water conditioning benefits are desired.

Build a Better Water Management Program

Effective moisture management is about more than simply applying water—it's about ensuring water reaches the root zone, remains available to the plant, and is used as efficiently as possible. By selecting the right wetting agent for your specific challenges, you can improve turf quality, optimize irrigation performance, and support healthier playing surfaces throughout the season.

Whether you're addressing localized dry spots, improving moisture retention, or implementing a season-long water management strategy, there is a wetting agent solution designed to help you achieve your goals.

Connect with Your Harrell’s Rep to Further Review Your Options

Wetting agents are not a one-size-fits-all type of product. Your turf has specific watering needs, which can be bolstered by the assistance of specific products. Your Harrell’s Rep is your best resource for pairing up your turf’s water needs with a wetting agent product to help them achieve maximum efficacy throughout the season.