Ro Unit

[zacdl]

Do they make them as low as <5 gallons a day or so?

I have a 30 gallon tank, I really dont need anything mroe than that.

 

[Ximat]

I just bought a 125 GPD unit on Ebay for 93ish after shipping. I won't need about roughly 75 GPM Overkill, but inexpensive.

 

[fishfreek]

An ro unit that low would wase so much water it would be insane. I have seen them as low as 25gpd. If you need to do an emergency water change you will want the higher GPD rating. You would use a float switch anyway to cut the water off so if it runs for an hour a day its all good.