SLMP Mission Statement

To foster an appreciation for and enhance the management of ponds and lakes, managed by private companies, with particular concern for the aesthetic and recreational uses and stewardship of such waters. Using tools such as innovation, education, representation, accreditation, and standardization of best management practices. Advocate wise stewardship of privately owned water, promote and recruit fishing opportunities in private water environments, and protect our environment. Learn more about SLMP – download our Code of Ethics and Brochure.

Board of Directors

Maryann Krisovitch is SLMP's Executive Director.  She came on board in February of 2020. Maryann is now in her 21st year teaching Floridians about our water resources. She works with local governments to help them meet their storm water discharge elimination requirements and is a certified erosion and sedimentation control inspector. Maryann travels around the state speaking to students and adults about our valuable water resources.  She trains residents to monitor water quality in their lakes and works with volunteers to restore and maintain conservation lands throughout Lake County, Florida.  Born in the Pocono Mountains of northeast Pennsylvania, Maryann is a Penn State graduate.  She is also an elected Supervisor on the Lake Soil and Water Conservation District Board.

Cole Hulon is the Western Office Manager for Foster Lake & Pond Management in Charlotte, NC.  He graduated with his B.S. in Wildlife Ecology and a Minor in Fisheries Science from The University of Florida in 2008. Cole went on to work for SePRO as a research technician at the research facility in Whitakers, NC. In 2012 He went to work for PLM Lake and Land Management where he went on to managed the aquatics division of the Littleton office on Lake Gaston.  In 2018 Cole went to work with Foster Lake & Pond Management. His passion for proper pond and lake management has helped him to thrive in the aquatics business. He is excited to be a part of a society that provides great content and comradery from like minded individuals.

John started Outdoor Water Solutions 17 years ago with a focus on providing quality products to the pond and lake industry.  The company has grown their product line to include solar, electric and wind powered aeration and fountains.  The company recently acquired Air-O-Lator which further expands their product line by adding more fountain and surface aerator options.

Prior to starting Outdoor Water Solutions, John spent 20 years in the Agricultural industry working for Monsanto.  His professional background includes jobs in general management, brand and sales management, and in mergers & acquisitions.

John is a member of Windsor Crossing Church and Vistage (a leadership development organization for CEO’s).  He is passionate about his family, which now includes two grandsons and loves to hunt, fish, run and hack at playing golf.  John is also active in managing the family farm where they raise corn, soybeans and operate a hog finishing operation.

John holds a B.S. degree from the University of Missouri in Columbia and an MBA from Washington University in St. Louis.  He is the Vendor Member representative on the SLMP Board

Mark Litwiler received a degree from Saint Leo University in Business Management graduating Cum Laude. In 1989 he started his career in pond/lake management with The Lake Doctors on the West Coast of Florida. After 12 years in the field and in management, went to work with the SePRO Corporation as their West Florida Aquatic Specialist. In 2002, he was transferred to the Midwest, as the rep for the 13 states. In 2005, Mark left SePRO to start his own company, Ponds Rx. Ponds Rx is a full-service management company located in Fishers, In. Mark has served two terms on the Board of Directors for the Midwest APMS. He is currently serving as  Treasurer of the Society and thinks it is a great group promoting pond/lake management groups from all over the country.

Mitchell Morton is the Vice-President and Head of Fisheries for Foster Lake & Pond Management in Garner, NC. Mitchell graduated from N.C. State University in 1996 with a degree in Fisheries and Wildlife. He began his career with Foster Lake & Pond Management in 1997 and has never looked back. In addition to managing a fast-growing company, Mitchell supervises of all trophy and balanced fisheries projects, lake design, fountain and aeration installations, and regulated SCM (Stormwater Control Measure) maintenance. He is an NC Stormwater SCM Certified Inspector, Certified SCM Construction Inspection Professional, and a Licensed Landscape Contractor. Mitchell has also been featured in NC Wildlife magazine for his skills with small pond fisheries management and is proud to serve as a Director for the Society of Lake Management Professionals. Foster Lake & Pond Management is also active in other organizations such as Stormwater Association of North Carolina, North Carolina Lake Management Society, and South Carolina Aquatic Plant Management Society. In his spare time, Mitchell enjoys coaching youth sports with his two wonderful sons, spending time with his wife, and writing/performing music with his bands.

Mason Grimes is the owner and Head Biologist at Southern Pond Professionals - a full service pond and lake management company. Mason has a Bachelor’s of Science in Fisheries and Allied Aquaculture with an emphasis in pond management from Auburn University. He has been in the fisheries industry for 11 years. Mason opened Southern Pond Professionals in 2016 in Snead, Alabama. 

Mason is married to his wife Paige and they have a 3 year old son MJ who they adopted in 2021. Mason and Paige are also foster parents in their county, and have shared their home with over 15 children in the last four years. Mason serves on the media team at their church, Redeemed Ministries. He and his wife also have a ministry called The Hope Seat where they interview people with stories that bring Hope to the world. When he is not working, Mason enjoys fishing, hunting, golfing, watching Auburn athletics, and spending time at the lake with his family. 

Mason joined the SLMP Board in January 2022.

Ethan Edge is the owner of Edge’s Pond Management, an aquatic weed control company that also offers pond liming and water quality testing. It is a sister company to Edge’s Aquatic Services (founded by his dad), which is a fish farm and pond/fisheries management company located in Soperton, GA. Ethan has been involved in all things pond and fish related his entire life, and spent most of his free time growing up helping out on his family’s fish farm. Ethan holds a Biology degree from East Georgia College, and after graduating, took over and bought the weed control portion of his Dad’s business. He has worked hard over the years to turn it into the valued company it is today. Ethan works on ponds and lakes all over the state of Georgia, as well as some in South Carolina and Florida, and is widely respected in the pond management industry. Along with serving as a board member for SLMP, he is also a board member for his county Farm Bureau, and serves as a member of the Georgia Aquaculture Association. In his spare time, he enjoys spending time with his wife and little girl, as well as hunting and fishing.

Robinson holds degrees in water resources with a fisheries emphasis and in biology from the University of Wisconsin-Stevens Point. He is a board of director’s member of the National Aquaculture Association, US Aquaculture Suppliers Association, the Society of Lake Management Professionals, and Mason Lake Improvement district. Other membership includes:

  • US Trout Farmers
  • US Tilapia Farmers
  • Midwest Aquatic Plant Management Society
  • Optimists International
  • National Aquatic Plant Management Society
  • Board of Directors Badger State Winter Olympics
  • Catfish Farmers of America
  • Aquaculture Engineering Society
  • Wisconsin Aquaculture Association
  • Wisconsin Lakes Association
  • North American Lake Management Society
  • American Society of Landscape Architects
  • Trout Unlimited
  • B.A.S.S.
  • National Rural Water Association
  • Wisconsin Rural Water Association
  • International Irrigation Association
  • American Fisheries Society – Fish Culture Section
  • American Farm Bureau
  • American Water Works Association

Past positions included work for the Indiana Department of Natural Resources, BLM- Colorado, State of WI., Aquatic Eco-Systems – FL., Purina-Rangen Fish feeds, Currently employed by Kasco Marine for the past 18+ years.

Guest writer for Fish Farming News for every issue for the past 20+ years.
Author of over 200 different publications and articles in scientific magazines and journals.
Guest lecturer for over 150 trade/science meetings on the topic of ponds/water quality/aeration.
Married for 30+ years, with one child (teaching in Miami).
Expertise: Pond/lake water quality, Aeration, Aquaculture in North America, The Green Bay Packers.

Bob Robinson Cell: 715 574 4784, office 715 241 8227


Director of Sales and Marketing/Fisheries Biologist

Kasco Marine –

Tom Warmuth is the Manager of the Lake, Pond and Municipal Segment for BioSafe Systems. As well as being involved on the boards and committees of several regional APMS societies, he is a recent Past President of the Western Aquatic Plant Management Society and the 2020 recipient of the Aquatic Plant Management Society’s Max McCowen Friendship Award.   Tom grew up in Fairport Harbor, on the northeast Ohio shores of Lake Erie.  He is a graduate of East Carolina University with a degree in Biology. Starting his career in Florida, Tom’s over 23 years of experience began in college while working in mosquito and public health pest control, then environmental consulting and permitting, and aquatic weed management. For the past 15 years, he has worked with peroxide algeacides and lived in North Carolina with his wife, Sara.

Greg was a founding member and the inaugural President of the Society of Lake Management Professionals in 2015.  He again resumed the presidency for 2018, signaling his enduring commitment to the organization's growth and its far-reaching industry impacts. His return to the board reflects an excitement about the Society's contributions to the flourishing landscape of private lake management.


A seasoned fisherman from a young age, Greg initiated his lake management career in 1991 during his undergraduate studies in biology.  Joining a lake management company, his thirst for knowledge propelled him to pursue a master’s degree in Fisheries from the University of Georgia in 1998. Greg founded Aquatic Environmental Services, Inc (AES) in 1996, where his entrepreneurial spirit became a driving force in advancing the industry.


Currently overseeing client and vendor relations while contributing to the company's growth, Greg has shifted away from the day-to-day operations. He still gets to spend a few days each year on the electrofishing boat, maintaining a hands-on approach to his passion. His primary focus lies in consulting projects nationwide, guiding clients to make informed decisions and fulfill their fishery aspirations, emphasizing the importance of starting right for a child's first fish or a bass exceeding 8 lbs. within three years.


With a rich portfolio of pond management articles, fishery seminars, and extensive work on ponds and lakes across 22 states and Mexico in his 30-year career, Greg is recognized as a leading expert in private fishery management. His dedication to innovation is evident in his constant pursuit of new methods for cultivating larger fish.


Beyond his professional endeavors, Greg cherishes his spare time with his two boys, savoring God’s creation. His multifaceted contributions and unwavering passion underscore his lasting impact on the private fishery management field.


Society of Lake Management Professionals


The name of this Society shall be the SOCIETY OF LAKE MANAGEMENT PROFESSIONALS.


To foster an appreciation for and enhance the management of pond and lakes, managed by for profit companies, with particular concern for the aesthetic and recreational uses and stewardship of such waters. Using tools such as innovation, education, representation, accreditation, and standardization of best management practices. Advocate wise stewardship of privately owned water, promote and recruit fishing opportunities in private water environments, and protect profitability.


The principle place of business shall be located at the address of the Treasurer or at such other place as the Board of Directors may decide.



Private lake management is an important and learned profession. As members of this profession, SLMP Accredited Member Companies are expected to exhibit the highest standards of honesty and integrity. Private lake management has a direct and vital impact on the quality of life for all people. Accordingly, the services provided by SLMP Accredited Member Companies require honesty, impartiality, fairness, and equity, and must be dedicated to the protection of the public health, safety, and welfare. SLMP Accredited Member Companies must perform under a standard of professional behavior that requires adherence to the highest principles of ethical conduct.


SLMP Accredited Member Companies, in the fulfillment of their professional duties, shall:

  • Hold paramount the safety, health, and welfare of the public.
  • Issue public statements only in an objective and truthful manner.
  • Act for each client as faithful agents or trustees.
  • Avoid deceptive acts.
  • Conduct themselves honorably, responsibly, ethically, and lawfully so as to enhance the honor, reputation, and usefulness of the profession.