Categorized | Aquaponics, Uncategorized

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

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.

? "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

Leave a Reply