Avast Marine
.Registered Member
As promised here is the Automatic Water Change!
The first part of the system is a mixing tub that has two pumps. One is a maxijet 400 to circulate and the other one is a quiet one 1000 that is plumbed to the tank.
In this photo you can only see the quiet one but, it is the important one.
<a href="http://www.flickr.com/photos/58279226@N00/185084426/" title="Photo Sharing"><img src="http://static.flickr.com/78/185084426_9a7d4a17cd_o.jpg" width="600" height="449" alt="wc1" /></a>
This is connected to 1/4" id braided hose and runs up to the emergency overflow of my equipment sump. There is a stockman style cut out on the pipe and the water is actually pumped via the tube into the pipe below the water line of the equipment sump. Because I am using the restricted drain method, if I were to pump water into this sump directly my water level would rise before the drain could catch up and the skimmer would overflow.
<a href="http://www.flickr.com/photos/58279226@N00/185084427/" title="Photo Sharing"><img src="http://static.flickr.com/62/185084427_4c49a812d6_o.jpg" width="600" height="449" alt="wc2" /></a>
This is the maximum amount of water I can have in my system without a overflow.
<a href="http://www.flickr.com/photos/58279226@N00/185084428/" title="Photo Sharing"><img src="http://static.flickr.com/1/185084428_fbbcee1e16_o.jpg" width="600" height="449" alt="wc3" /></a>
And this elbow in the middle facing up is where water will go in the event of a overflow, rather than the floor.
<a href="http://www.flickr.com/photos/58279226@N00/185084430/" title="Photo Sharing"><img src="http://static.flickr.com/62/185084430_03c7bb48c1_o.jpg" width="600" height="449" alt="wc5" /></a>
That is the system. Heres how it works.
Water is happily mixing away in the bucket. In the evening when I feed I press the feed button on my aquacontroller. This turns on the quiet one pump and starts pumping new water into the system. The flow is set to add 1 gallon per minute approximately (not really important you'll see why in a minute) and the pump turns itself off after that minute is up. So now I have one gallon too much in the system.
For these pictures I am actually using 4 gallons of added water so it is easy to see what is happening.
<a href="http://www.flickr.com/photos/58279226@N00/185084429/" title="Photo Sharing"><img src="http://static.flickr.com/48/185084429_1fb9a456a8_o.jpg" width="600" height="449" alt="wc4" /></a>
So after the new water is mixed for 5 minutes with the old water the main return pump automatically turns off via the controller. The water begins to rise and eventually starts to drain out the pipe.
<a href="http://www.flickr.com/photos/58279226@N00/185084432/" title="Photo Sharing"><img src="http://static.flickr.com/64/185084432_72626eac37_o.jpg" width="600" height="449" alt="wc6" /></a>
and to the floor drain in the other room.
This is when I will feed. The return pump stays off for another 15 minutes then turns itself back on. The water now equalizes back to its original level and the float switch for my ATO keeps it there.
<a href="http://www.flickr.com/photos/58279226@N00/185084428/" title="Photo Sharing"><img src="http://static.flickr.com/1/185084428_fbbcee1e16_o.jpg" width="600" height="449" alt="wc3" /></a>
So there you have it, my auto water change system (modified from a system introduced by Anthony Calfo). I will be changing 1 gallon per day on a 100 gallon system. 1/100 of a gallon per day will be wasted due to removing water I just put in. So in a month there will be a 30% change, with the only effort on my part being to mix salt water every 10 days or so which I think should take me about 2 minutes per month :rollface:
The first part of the system is a mixing tub that has two pumps. One is a maxijet 400 to circulate and the other one is a quiet one 1000 that is plumbed to the tank.
In this photo you can only see the quiet one but, it is the important one.
<a href="http://www.flickr.com/photos/58279226@N00/185084426/" title="Photo Sharing"><img src="http://static.flickr.com/78/185084426_9a7d4a17cd_o.jpg" width="600" height="449" alt="wc1" /></a>
This is connected to 1/4" id braided hose and runs up to the emergency overflow of my equipment sump. There is a stockman style cut out on the pipe and the water is actually pumped via the tube into the pipe below the water line of the equipment sump. Because I am using the restricted drain method, if I were to pump water into this sump directly my water level would rise before the drain could catch up and the skimmer would overflow.
<a href="http://www.flickr.com/photos/58279226@N00/185084427/" title="Photo Sharing"><img src="http://static.flickr.com/62/185084427_4c49a812d6_o.jpg" width="600" height="449" alt="wc2" /></a>
This is the maximum amount of water I can have in my system without a overflow.
<a href="http://www.flickr.com/photos/58279226@N00/185084428/" title="Photo Sharing"><img src="http://static.flickr.com/1/185084428_fbbcee1e16_o.jpg" width="600" height="449" alt="wc3" /></a>
And this elbow in the middle facing up is where water will go in the event of a overflow, rather than the floor.
<a href="http://www.flickr.com/photos/58279226@N00/185084430/" title="Photo Sharing"><img src="http://static.flickr.com/62/185084430_03c7bb48c1_o.jpg" width="600" height="449" alt="wc5" /></a>
That is the system. Heres how it works.
Water is happily mixing away in the bucket. In the evening when I feed I press the feed button on my aquacontroller. This turns on the quiet one pump and starts pumping new water into the system. The flow is set to add 1 gallon per minute approximately (not really important you'll see why in a minute) and the pump turns itself off after that minute is up. So now I have one gallon too much in the system.
For these pictures I am actually using 4 gallons of added water so it is easy to see what is happening.
<a href="http://www.flickr.com/photos/58279226@N00/185084429/" title="Photo Sharing"><img src="http://static.flickr.com/48/185084429_1fb9a456a8_o.jpg" width="600" height="449" alt="wc4" /></a>
So after the new water is mixed for 5 minutes with the old water the main return pump automatically turns off via the controller. The water begins to rise and eventually starts to drain out the pipe.
<a href="http://www.flickr.com/photos/58279226@N00/185084432/" title="Photo Sharing"><img src="http://static.flickr.com/64/185084432_72626eac37_o.jpg" width="600" height="449" alt="wc6" /></a>
and to the floor drain in the other room.
This is when I will feed. The return pump stays off for another 15 minutes then turns itself back on. The water now equalizes back to its original level and the float switch for my ATO keeps it there.
<a href="http://www.flickr.com/photos/58279226@N00/185084428/" title="Photo Sharing"><img src="http://static.flickr.com/1/185084428_fbbcee1e16_o.jpg" width="600" height="449" alt="wc3" /></a>
So there you have it, my auto water change system (modified from a system introduced by Anthony Calfo). I will be changing 1 gallon per day on a 100 gallon system. 1/100 of a gallon per day will be wasted due to removing water I just put in. So in a month there will be a 30% change, with the only effort on my part being to mix salt water every 10 days or so which I think should take me about 2 minutes per month :rollface: