water changes using dosing pumps?

[Tiago2010]

Just wondering if it's possible to do automatic water changes using 2 Milwaukee dosing pumps. That pump will dose 3.8 gallons in 24 hrs. So if I use one pump to dose tank water to a drain and use the other pump from my saltwater container to the tank at the same flow rate I can run it 12 hrs a day and I can get 56 gallons of water change in 30 days that would be 50 percent of my volume a month. Will this work?

 

[wolfblue]

Seems like there was a thread about this only a couple of days ago. In the future you might search something your curious about and bring that thread back to the top. You usually find what you need without even a post. Or you end up with new questions. Your old question already covered. Faster for you and us that way.

So yes that works and many people do continuous water changes. A better way is a double head peristaltic dosing pump. That way if one motor fails there is only one, everything stops. You still will have the problem of a tube rip, and one stops pumping. But you should change the tubes as a regular thing before one rips.

But that's not a 50% water change. That's a million .0000005% water changes. You waste a lot of salt to get back to the same result. If the point of water changes is to remove something you don't remove much like that. That could be fine by you and it is fine for many.

 

[dartier]

I was just thinking the same thing (this just came up). Here is the thread http://www.reefcentral.com/forums/showthread.php?t=2469138

Dennis

 

[cilyjr]

Here's what I use to change 2 gallons a day. It's a pump that can attach 3 heads but all turn at identical rates. It's good to check salinity from time to time just incase...