Backyard Aquaponics
A place to discuss aquaponics

Has anyone got any experience with using one of these 12 volt pumps in place of a 240 volt electromagnetic one? I figure it gets rid of the need for a 240/12 volt inverter if they are suitable. I have used similar pumps in 4wding but they usually have a duty cycle and get pretty hot. I would not have thought they would be suitable for 24 hour a day running but these are being sold as aquarium pumps? Would be good if they are OK, simple to hook up to battery bank and run a CTEK charger to the battery to keep them topped up when 240 volt power is on.

http://www.guppysaquariumproducts.com.a ... _1543.html

Yeah they are good, you just need to take that end cover off and fill it with grease - they are a bit stingy at the factory.

Got 1 for my emergency backup system. Sounds like one of those little car air compressors. Damn noisy wouldn't want to run t permanently.
Grabbed one of these at the same time lot better noise wise.
http://www.guppysaquariumproducts.com.au/air-pumps/electromagnetic-piston-pump/electromagnetic-air-pump-40l/min-outputs-hjd-02/prod_1344.html

My plan was to set up the 12v one to switch on only on AC fail. Both air pumps feeding into same airline via a check valve if needed.

OB, have you run one consistently? I am looking at running it without a fallover switch for the AC fail. Guess I can knock up a power fail switch if needed.

Like most 12v gear you cant run it continuously for ages, I'd say 6 month life would the most.

I'd do it the same is Priv, but I myself prefer inverters, because if the mains goes out for a long time I can plug the ute in

Could you not plug the ute into your battery bank as well even without an inverter? Hopefully it should not be a problem for me as I have over 300AH which should sustain it for nearly 36 hours without charging.

Yeah, but i'd need to move water as well, probably only got a couple of hours of air holdover with this system.