TetraPond® SF1 Submersible Pond Filter Recommended The TrueRock™ is great for

The TrueRock™ is great for covering aeration pumps

thread sealant and fittings

so this hybrid gives a product that will stand the test of time

Water temperature should be at least 50°F and dissolved oxygen levels should be above 3 ppm

Also available with optional bottom screen (3400AFB Series) or without float (3400A Series)

TetraPond® SF1 Submersible Pond Filter Recommended The TrueRock™ is great forThe TetraPond SF1 Submersible Pond Filter is a flat box filter that keeps ponds clean and prevents pump and fountain heads from clogging! Includes a flat filter box with filter to hose fitting, coarse and fine foam pads, 1" tubing, and three fittings for attaching hose to various pump inlets. Fits a wide variety of pumps, 200 2000gph For ponds 50 500 gallons in size 1 year limited warranty