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PostPosted: May 3rd, '19, 14:12 
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anyone have any advice on how much power a simple ibc system would need? I would lkie to set up solar panels and power it that way.


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PostPosted: May 4th, '19, 08:23 
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Really not worth it if you can plug into power. The cost of panel, battery, inverter and/or decent quality DC pump means you could run the system plugged in for many years. Here's a solar system we set up a few years ago. viewtopic.php?f=51&t=13060

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PostPosted: May 4th, '19, 12:06 
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thanks for the reply. Sadly we have no power where i am at so solar is my only option..
THinking of running a 12v boat bilge pump thats around 200gph. says it needs 10w. so i think a 150 or 200w system would power it.
any thpughts?


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PostPosted: May 4th, '19, 14:08 
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Both my systems are running from the main off-grid house solar power system. I'm running a 240V Hailea 60lpm air pump continuously via a 24V battery powered 300W inverter as a backup air pump, in parallel to the other identical Hailea, which is continuously running from the house system. The backup pump has its own 165W panel, but I also give it a 25min charge every 2 hours overnight on a timer to reduce battery cycling.

12VDC air pumps are a good idea in theory, but in my experience they do not last very long, being only suitable as a backup that runs very rarely in case of main pump failure. I use mine for fish transport only.

Running a water "DC pump" (they aren't really!) such as Jebao or other similar pumps from a regulated 12 or 24V supply from a battery should work reliably, but you wouldn't want to run them directly from a 12 or 24V battery, as the battery charging voltage is significantly higher than the controller input voltage rating.

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PostPosted: May 5th, '19, 00:53 
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Alright so sounds like i should run an air pump and use a 24v battery.
Im thinking of doing around 200w. how many batteries should i have?


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PostPosted: May 5th, '19, 12:14 
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If you have 12V batteries then you will need 2, in series. Battery capacity and PV panel output rating depend on lots of things, including continuous and peak load, how much cloud you get, how well exposed to the sun the panel is etc, so not possible for me to guess what you need.

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My small AP system: http://backyardaquaponics.com/forum/viewtopic.php?f=18&t=16345
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PostPosted: May 5th, '19, 17:57 
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Think about what you actually really need with your system , a lightly stocked system (fish) will still drive a large plant production system

This of course will use a lot less power than a heavily stocked system as the water and air needs to keep going to keep the fish alive.

So a high quality timer that can cycle your system a few times over night and more cycles during the day (while the panels are working) would be a good investment.

This will drastically reduce your battery requirements .

Fish selection will help , for a start if you just use goldfish they are pretty tough so maybe you can get up and running and build on and expand later .

Find out what will work for you

Maybe set up a large fish tank (more surface area the better) pump up to grow space and drain back type system .

Or perhaps run on a timer or better still run a small pump 24 hrs a day and the main pump runs during daylight hours (this is my grand plan idea for my next build) , so growbeds would run constant flood overnight and siphons work on the main pump through the day .

Keep pumping height to absolute minimum , use large pipes (less flow loss from friction) do what you can to reduce power requirements every where you can .

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PostPosted: May 9th, '19, 03:15 
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Since you are in the USA, I would recommend you use a 12 solar set up. I have been living on mostly solar power for the last 8 years in a small RV. Handy Bob taught me how

https://handybobsolar.wordpress.com

You might want to start with a complete kit like this. All you need to add is batteries

https://www.harborfreight.com/100-watt- ... 63585.html

I use 2 six volt golf cart batteries connected in series to power my 12v RV systems. GC batteries can better handle the deep discharging. Costco and Sam’s sell decent ones for about $90 each.

There is an RV website that has a forum that deals mainly with solar issues

http://www.irv2.com/forums/f56/

I'll be trying to run an aquaponics system on solar in Arizona starting in October. I'll look forward to your success or learn from your not so successful experiences. :D

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