Tidal Wave MD550 Magnetic Induction Pumps are the perfect choice for the small water feature with low head heights. Hefty and heavy-duty, equipped with removable prefilters, oversize ceramic shafts, replaceable impeller assemblies and a 20' power cord.

Atlantic Mag Drives are the ones you've been waiting for. Backed by a three-year warranty and bringing great energy efficiency, these Mags are winners!

  • Volts: 115.
  • Watts: 40.
  • Inlet: 1" FIPT.
  • Outlet: -" FIPT.
  • Dimensions: 4-"L x 3-"W x 5"H.
  • Includes: Pre-filter, -" - 1" outlet fitting.
  • Oversized male threaded inlet and outlet for less restriction and greater flow.
  • Rotating volute provides maximum adaptabilityfor any installation.
  • Half twist volute provides access to the impellerassembly without the use of tools.
  • Large, stable base is removable for added versatility.
  • Removable pre-filter provides increased surface areaand reduces maintenance.
  • Tapered outlet fittings accept a wide array oftubing sizes.

    This chart show the Gallons Per Hour flow at various heads. Make sure the pump you choose will provide the correct flow rate after you have calculated the total head including pressure loss from the pond tubing. Every 10' of pond tubing will add an extra foot of head to the total!
    • The perfect pump for small water features with low head heights
    • Equipped with removable pre-filters, oversize ceramic shafts, replaceable impeller assemblies and a 20' power cord
    • Great energy efficiency to save you money
    • 5-year limited warranty, a pump you can count on
    • Rotating volute and removable large, stable base provides maximum adaptability
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    Atlantic Water Gardens Water Feature & Fountain Pump, Removable Pre-filter, 550 GPH

    • $153.34
    • $132.00

    Dynamic Head

    The effect of the Earths gravity on the "lift" or head pressure is fairly simple; for every vertical foot of distance the pump moves the water you are adding one foot of head pressure so the ratio is a 1:1 ratio. The effects of the friction, caused by water as it travels through your hose or pipes, on the total head pressure is a little more difficult to calculate especially as there are slight variations in pipe friction in different hose materials and the smoothness of the inner bore. Basically. for every ten feet of pipe through which the water has to travel travel horizontally will contribute 1 foot of head height; the ratio of the pipe friction loss is a 10:1 ratio.

    Plumbing fixtures and bends and corners in your hose also increase the total head you must calculate to ensure the proper final volume from your pump. Every corner with a 90 degree elbow in your plumbing will add 1 foot of head pressure  with a 1:1 ratio. 45 degree elbows, tees and even insert couplers can all have an impact on the final flow.

    If you install a pump 40 feet away from the top of your waterfall which is 6 feet above the pump and the tubing is a single run of 40 feet horizontally then you add 4 feet of head for the tubing length (the 10:1 ratio) to the 6 foot differnetial between the pump location and the final height of the waterfall so your final total dynamic head calculation would be 10 feet. This means your final volume of water flow in this water feature or application would be the volume of flow on the performance curve that equaled the gallons per hour at 16 feet. This volume will certainly be much less than the initial volume the pump can move at an open flow or a zero head.

    If in the above example your 40 feet of horizontal tubing run also required 3 elbows of 90 degrees then an additional 3 feet of theoretical head would be added and your final flow result would be at 19 feet on the performance curve of the pump. In this example you would want to choose a pump that has the desired GPH rating at 9 feet of head pressure.  Tubing size is also an important factor in accounting for head pressure loss, in general you should never reduce the diameter of the tubing below what the output size of the pump is, this will drastically increase head pressure, and reduce pump performance.  For maximum pump performance, using the largest tubing that is practical is the best choice. A best practice is to use a hose with an inner diameter that is the same as your pumps outlet fitting.