Aquaponic Gardening

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OFF GRID

doing it with your own power

Members: 219
Latest Activity: Feb 20, 2017

Discussion Forum

Compost Heating

Started by Kimberly Irene Lewis. Last reply by Jim Edmunds Feb 20, 2017. 7 Replies

Hi I am new and just researching my systems before I put them in. I plan on eventually having at least one large greenhouse full of aquaponics. I Live in Virginia and where as it doesn’t get too cold…Continue

Wind mills for aerators

Started by William Kohut. Last reply by Jim Fisk Jan 29, 2016. 8 Replies

Has anyone built a Windmill for aeration ? I am looking for plans to build a windmill and an aerator that runs off it.Continue

Failed on first attempt at off-grid. questions about voltage.

Started by Jeffrey Ihara. Last reply by Jeff S Sep 20, 2015. 29 Replies

So I bought a 45W photovoltaic kit from Harbor Freight which comes with its own charge controller ($139 on sale), a used deep cycle battery with 135 amp-hours, and a 1.6 amp DC pump that moves over…Continue

Going off grid with Solar in the new greenhouse

Started by Carla&Dave. Last reply by Carla&Dave Jun 25, 2015. 4 Replies

Pump power load on my SAP (Solar Aquaponics) system - rough calcs: I just put the system up last week, and just put in a kill-a-watt meter on Sunday.The meter is showing 200 watt hours in 24 hours…Continue

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Comment by Kirsten Udd on October 22, 2012 at 2:57pm

George, sorry I didn't see this sooner. Hopefully it can help someone else if you've already purchased.

The pump I use is 230V 50HZ .02A = 4.6W (according to this calculator http://www.supercircuits.com/resources/tools/Volts-Watts-Amps-Conve...). 

TheWaterGardener has GREAT, very responsive to my questions before I bought, customer service, 2-year warranty on this product, and same-day shipping.

http://www.thewatergardener.com/products/hakko-25l-linear-air-pump-...

I'm including these other links for the researchers, like myself, who like to see the numbers and research ALL the details before making a decision:

Here's an ebay page which lists the specs: http://www.ebay.com/itm/Hakko-HK25-25L-Linear-Air-Pump-Pond-Aeratio...

Here's a link with multiple reviews of this product: http://www.pondproductreviews.com/Hakko-Air-Pumps/HAKKO-Linear-Air-...

Comment by William Kohut on October 22, 2012 at 2:30pm

Anyone use a solar powered aerator?

 

Comment by George on July 27, 2012 at 5:51am

Yes, but low expense is not the object and I have 120V stuff already, inverter, etc.  What I'm looking for is 12V very low wattage to run straight from solar/battery.

Comment by Bob Campbell on July 26, 2012 at 10:36pm

It seems less expensive to use an inverter to drive a 120V air compressor.

The one's I linked a few days ago look like good air pumps but $149 only delivers 17 lpm whereas my 70 lpm pump costs $65.00.  Add a 400W inverter for $40 and $105 gets you 4 times the air.

The large 12V air compressor at $349 delivers only 42 lpm.

Comment by George on July 26, 2012 at 10:11pm

Well Flaco, can you recommend a 12V pump which will last long term?  Anyone?  Mine has a redundant function so it shouldn't be a crisis if it does fail but I've been on a search for a while now for something better.

Comment by George on July 26, 2012 at 6:48am

Marine Metal Products Power Bubbles 12V DC Aeration Pump - I have one of these mounted in a kayak - can't say whether it would hold up long term in an aquaponics system but it might - works well keeping bait alive.  1/4 amp X 12V = 3 watts, which is really something to think about.

Comment by Dave & Yvonne Story on July 25, 2012 at 10:23pm

amazon    $35.24    I purchased 5   let you know

Marine Metal Products Power Bubbles 12V DC Aeration Pump keeps up to 2 live wells fresh and oxygenated. An on-board air pump system for boats with built-in live or baitwells, featuring dual high-volume discharges to work with 2 livewells. Low-current 1/4 amp, pumps 2 liters of oxygen per minute. Includes pump unit, 10' of flexible air tubing, 2 large airstones (allows pump to be mounted in any protected area). 2 anti-siphon valves protect pump against water intrusion. Quiet, solid-state circuitry for reliability and quiet operation. For fresh or saltwater. Order yours today! Marine Metal Products Power Bubbles 12V DC Aeration Pump

Comment by Stuart Polkinghorne on July 25, 2012 at 3:18pm

I've found dc water and air pumps are pricy but very good quality as most are for marine applications and built to last.  Try you local boat shop.

Comment by Bob Campbell on July 25, 2012 at 2:31pm

I just did a quick search for a 12V commercial air pump

It's a bit pricey but it delivers the goods

Comment by Debra Colvin on July 25, 2012 at 2:13pm
From what I've been able to find so far, a dc version of an air pump is commonly available at pet stores. Even WalMart is supposedly carrying them, in their sporting goods department. Gives me a good excuse to visit the local petstore for some bunny therapy:)
 

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