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PP21105 : 211 GPH, Submersible, Hydroponics, Aquaponics, Aquarium Pump – 12W

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Amazon Price: $39.99 $16.99 You save: $23.00 (58%). (as of August 9, 2014 2:48 am – Details). Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on the Amazon site at the time of purchase will apply to the purchase of this product.

HOW TO CHOOSE A HYDROPONIC, AQUAPONIC, ALGAPONIC, AQUARIUM, POND OR FOUNTAIN PUMP First remember:
? "Maximum Flow Rate" is meaningless because it is at ZERO head.
? "Maximum Head/Lift" is meaningless because the flow at that height is only a trickle.

You need an affordable quality pump with the desired flow at your required head and lowest wattage.

Step 1: Determining Desired Flow Rate
Most ponics systems flow through a single loop allowing a single pump. A flow rate near 100 GPH is sufficient for grow beds loop up to 120 feet. If you have multiple grow-bed loops, then 100 GPH is needed for each loop. Flood/drain beds needs 2 to 4 cycles per hour.

Step 2: Calculating System Head
Measure the vertical distance from the "top" of the water in the pump tank to the pump discharge pipe. A typical requirement is 100 GPH @ 3 feet.

Step 3: Pump Selection Considerations
? Continuous vs. intermittent pump duty cycle increases pump life, plus no need for a timer or level control.
? A rule of thumb is that an average pump will last 2-4 times the stated warranty period.
? Best to buy a backup.

Step 4: Is A Foam Filter Needed?
The objective of a filter is to keep objects/grit out of the pump.
? While great for ponds, a foam filter in "ponics" systems is a maintenance headache as good place for algae to grow.
? If you endeavor to have clear water… you will likely need a separate pre-filter, so a foam filter is redundant.
? Green water algaponics systems require a vortex pre-filter; a foam filter would only clog with desirable algae.
? Micro-algae will not hurt a pump unless it stops water flow.

Product Details

  • Shipping Weight: 1.2 pounds
  • ASIN: B006M6MTAK

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