Need pump advise. What pump will run a ro/di filter?

[Delphinus]

As far as recirculating the waste water back through the RO/DI, I thought I read somewhere on RC of people putting a RO/DI on the waste water of one, and even another RO/DI on the wastewater of that one. Of course, that seems kinda costly.

As far as a low flow high pressure pump, there are such things and should run you about $100-200. The key to this style of pump is low flow, but can run pressure to about 80psi or even up to 200psi. People who have dart frogs sometimes use this kind of pump to produce a fog through fog emitters (you need very high pressure to get a good fog, otherwise the water droplets are just too big). At one point I knew a part number of a 200psi pump that you could get a Western Pump for about $160 but I've since lost the info since I never really followed through on my foray into that hobby. If you needed I could try to look it up but I'm not sure if this is the style of pump you're looking for.

[Fish]

Thanks Tony. I am concious of my electrical consumption (eg, I'm going T5HO to save over halide), but I'm not quite a hippie ( :
I guess if I was really "green" this wouldn't be the best hobby for me. Mostly my issue is with water. I lived for a couple years in a country where the water wasn't drinkable and you had to use bottled water just to brush your teeth. I guess it kinda made an impression on me and I'm still amazed that we use drinking water to flush our toilets here.
I think that a pump that would allow me to push wastewater through a sprinkler would be a decent compromise.

- Chad

[Delphinus]

The only thing I can sort of think of about that is that I can see the reservoir getting pumped empty in a manner of minutes whereas we usually need to run a sprinkler for 20 minutes in an area to get your 1cm. I dunno, I just sorta envisioning this being an expensive proposition for you (a high flow high pressure pump must exist but I see it being pricey), but then again I could be way off base.

I think you don't have to be a hippie to appreciate those low volume dripper style irrigation systems, and you could feed that with a rain barrell filled with RO wastewater.

Then again I guess I'm just trying to influence you into doing what I was sort of one day hoping to do myself, so if you do come up with a different idea that's cool too. Good luck with whatever you come up with, I'm sure there are some good ideas to be be found.

[mr_alberta]

I think a permeate pump would work for you. Then you don't have to worry about pumping water back through your R/O system again afterwards:

http://www.aquariumwaterfilters.com/...pshop&Itemid=6

[Fish]

??? wow. I've never seen one of those before - and I have no idea how that works

- Chad