Reddit mentions of KEDSUM 550GPH Submersible Pump(2500L/H, 40W), Ultra Quiet Water Pump with 5ft High Lift, Fountain Pump with 6.5ft Power Cord, 3 Nozzles for Fish Tank, Pond, Aquarium, Statuary, Hydroponics

This is pretty much what I do. I bought this pump from Amazon. My wort chiller came with a hookup for a normal garden hose. I bought the cheapest garden hose I could find at Lowes as well. Since the two size attachments that came with the pump did not exactly fit the width of the garden hose after I had cut into it, I had to use scissors to cut about an inch of the inner rubber core out, while leaving the outer green section intact. This fit pretty securely over one of the included pump attachments. Then I used a stainless steel adjustable clamp to make sure they stayed together.

This setup works pretty well for me. I do 5.5 gal batches BIAB style. I freeze tupperware containers of water to make big ice cubes, then fill a cooler with water, the big ice cubes, and put the pump in. To start off with, I hook directly into my garden hose and let that go for 10-15 minutes, because otherwise the super hot wort/water at the beginning melts through the ice quickly. I prefer to let it cool down some before I disconnect from the hose and connect to the pump.

And just as a heads up, double check the tightness of the connections between the copper wort chiller and its plastic tubing. My clamps were not tight enough and I had some foreign water spray into my wort. I just brought it back to a boil and all was well.

you want something like this: https://www.amazon.com/KEDSUM-Submersible-Aquarium-Powerhead-Hydroponic/dp/B017R708QO/ref=sr_1_3?ie=UTF8&qid=1499289504&sr=8-3&keywords=aquarium+pump

You can pick up something like this from hardware store of your choice

https://www.lowes.com/pd/Whirlpool-84219910-Single-Stage-Whole-House-Water-Filtration-System/1201339

Then hop over to amazon and grab a pond pump.

https://www.amazon.com/KEDSUM-Submersible-Fountain-Aquarium-Hydroponics/dp/B017R708QO/ref=sr_1_28?keywords=pond+pump&qid=1567805162&s=gateway&sr=8-28

From there all you gotta do is hook it up. I cannot say how well the under 400 GPH pumps work since mine is 550.

Quick edit: I did a quick search, and I found this video and it seems pretty informative. The only thing I'd change to this is to place everything in a 2 or 5 gallon bucket from the hardware store too.

https://www.youtube.com/watch?v=R-eB91tg3es

I bought this guy and it has served me well enough with 5 gallon sanke and corny kegs. I do the upside down keg on a bucket method with PBW, then hot water, then depending on if I'm filling at the time I also hit it with starsan. I'm not sure if it would be sufficient for a half barrel sanke but i bet if you restricted the flow in your cleaning wand and just spun it around more often it would be fine. Works well to clean lines as well. Just have to buy a bit of pipe, quick disconnects, and a quick carb cap (if you use ball locks).

The cheapest and easiest way you can do it is probably by not using an arduino (especially if you value your time!). If you are in it for the fun of the build, go for it, but I have a recommendation if you just want to water your plants.



I grew indoor plants for several years at medium scale (60 plants, 20,000 watts), and now grow commercially for the recreational market in OR.



Start with a short cycle timer like this:


https://www.amazon.com/Multifunctional-Infinite-Programmable-Appliances-Energy-saving/dp/B01G6O28NA



and a pond pump like this (get whatever size you need, generally 100gph per 5 gal of medium/soil is more than enough for very thirsty plants - so this one would water 5-6 large plants in 5 gallon pots):


https://www.amazon.com/KEDSUM-Submersible-Aquarium-Powerhead-Hydroponic/dp/B017R708QO/



Then use a Rubbermaid Brute (commercial) trash can as a reservoir (they come in sizes from 10gal-50gal depending on your needs). They are a bit more expensive, but cheaper than flooding your house or apartment:


I use these: https://www.amazon.com/Rubbermaid-Commercial-Recycler-Rollout-Hinged/dp/B0007845JC/


and these: https://www.amazon.com/Rubbermaid-Commercial-FG263256GRAY-Plastic-32-gallon/dp/B005KDAQ3I/



You can likely find the trash cans cheaper at a big-box hardware store. they are generally $1/gallon.



let me know if you have any questions and id be happy to help!

ohhhh sorry.
https://www.amazon.ca/KEDSUM-Submersible-Powerhead-Fountain-Hydroponic/dp/B017R708QO/ref=sr_1_12?ie=UTF8&qid=1467160884&sr=8-12&keywords=water+pump

Shooting for around 20gal but dont mind a little less or a little more.

Going to be using a pump to water with. Any suggestions at to what water pump would be good to use for currebtly hand watering but potentially upgrading to a drip feed? Would be feeding up to 4 plants.

I saw this pump and thought it looked like a good deal https://www.amazon.com/dp/B017R708QO/ref=cm_sw_r_cp_apa_-5SKBbTYZNQ8E

Just not sure if 550gph is too much or really even what I should look for.

I mean something like [this](SongJoy Wave Maker Circulation Pump 3170GPH Suction Cup Base Powerhead for Aquarium https://www.amazon.com/dp/B01J19M7WO/ref=cm_sw_r_cp_api_hTNAzbGVTC1MR), but less powerful. Maybe [this](KEDSUM 550GPH Submersible Water Pump for Indoor Pond Aquarium, Fish Tank Powerhead for Water Fountain Hydroponic, 40W https://www.amazon.com/dp/B017R708QO/ref=cm_sw_r_cp_api_nUNAzbPFN802J) is better? Or a smaller powerhead and a smaller wave maker?

This is the pump I use, the outlet is threaded so you can get a 3/4" garden hose adapter for it.

https://www.amazon.com/KEDSUM-Submersible-Aquarium-Powerhead-Hydroponic/dp/B017R708QO/ref=sr_1_1?s=pet-supplies&ie=UTF8&qid=1496847685&sr=1-1&keywords=kedsum+pump