Plecos (tropical) die below 50–55°F. Michigan winters will kill them unless pond is heated (impractical) or they're brought inside.
If goldfish overwinter successfully, pond is deep enough for them (they go dormant at bottom). Plecos cannot do this.
Algae control? Better options:
Algae control: algae2.htm. Pleco care: pleco.htm. Winterizing: winter.htm.
Seaming Two Pond Liners at a Waterfall: Step-by-Step for a Leak-Proof Join
High Alkalinity Well Water (pH 9) in a Montana Pond: Lowering KH Safely
Identifying and Controlling Egeria densa in a Spring-Fed Trout Pond
Water Snake in Goldfish Pond: Removal and Deterrence
Natural Pond Restoration: Aeration, Brown Water & Muck Removal
DIY Pond Greenhouse: Wintering a 120-Gal Shell in Alabama
Golden Orfe in Small Ponds: Why They Jump & Better Alternatives
Cesspool-Smelling Large Pond: No Outlet = Stagnation Death
Pond Filter Choice: Biological > UV, Aquascape Designs Resource
Frogs in Your Garden Pond: Friends, Not Foes
Creating a Turtle Pond: Size, Fencing, Filtration, and Winter Care
Building a Koi Pond: Depth Requirements and Planting Water Lilies
Identifying Frogs in Your Koi Pond: Friend or Foe?
High pH in a Small Koi Pond: Cement Leaching and Safe Correction Methods
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