REEF2REEF Saltwater and Reef Aquarium Forum
Let's keep this thread going, SHALL WE!! We will get into #AvastMarine Auto Top Off system that I went with! I selected #Avast Kalk Stirrer and I will show you differnt ways you can run this:
Avast Marine on choosing the correct dosing pump for there Auto Top Offs:
One question we frequently receive concerns which of our two choices of automatic top-off pumps is best. Of course, the short answer is, "it depends". We have two styles of pump available, a peristaltic pump and a diaphragm pump. The peristaltic pump works by means of a motor slowly turning a rolling mechanism which pushes water through a section of tubing by pinching the tubing flat with a roller, and pushing that bit of water along until the next roller in the assembly contacts the tubing again, etc. The result is a slow but very consistent flow rate. The diaphragm pump works differently. It is very similar to an air pump, where a pair of flat rubber disks called diaphragms are actuated one at a time, pulling water (or air) in on one side, then pushing out the other side as the diaphragm closes. Similar to how a heart pumps blood. The main difference between the two for top-off purposes concerns the
ability of the peristaltic pump to prevent backflow when the pump is powered off. In some cases, a top-off reservoir may be situated so that it is higher than the sump that it fills. In this case, if a pump like a diaphragm pump draws water from the reservoir, pushes it through tubing to the sump, and then turns off, the water will continue to siphon "downhill", potentially leading to overfilling of the sump. This is because the diaphragms are partially open when the pump is off. Conversely, the peristaltic pump's roller mechanism simply stops in place, and one roller is always in contact with the tubing, pinching it
closed. Therefore, no water can pass while the pump is off. A peristaltic pump is the best choice when there is potential for unwanted siphoning.
1ST this is how I will be running my @AVAST Marine #Kalk #Stirrer and my diaphragm pump off my Mixing Station. As far as the pumps, I went with one of Avast Marine Diaphram pump to transfer my fresh RODI WATER FROM THE FRESH barrel to my K1 Stirrer which will be installed under my tank! I went with the
Or you can run it off your ATO reservoir.
My Avast Marine ATO system and Avast Diaphragm pump with the Digital Output for my ProfiLux4 controller.
This little diaphragm pump is an excellent choice for automatic top-off duty. Unlike other diaphragm pumps available, this little powerhouse can push water to 60psi (~130ft high). It can also safely run dry, unlike conventional powerheads. It is quiet and runs on 12v DC power. Flow rate is approximately 400mL/min, but note that it is not rated for continuous duty nor saltwater applications. This means for intermittent use (as in ATO usage) it is great, but we do not recommend it for use as a calcium reactor feed pump, for example. It can be used in conjunction with a kalk stirrer, but only to push fresh water into the stirrer. We do not recommend pulling kalkwasser through the pump, as the high pH may shorten the life of the rubber diaphragms.
Optional backup float valve installation The backup float is designed to prevent the ATO feed pump from adding too much water to the system should the main switch box fail. If the pump somehow remains active, the water level will rise high enough for the float to seal the end of the ATO feed tube. This is a mechanical seal which can hold back considerable pressure from a pump or even a pressurized water source. Care should be taken to test the hookup to the valve, mostly to ensure that when the tube is closed, backpressure from the pump does not blow off a tube or fitting somewhere between the pump and float valve. For this reason, we do not recommend using peristaltic (dosing) pumps with the backup valve, since they often produce considerable pressure, and can rupture the tubing between the backup valve and the pump. Also, note that an unsealed kalkwasser stirrer (such as our K1 or K2 models) is incompatible with the backup valve. This is because the valve will shut off water flow to the aquarium, but the ATO pump will continue to add water to the kalk stirrer, possibly causing an overflow at the stirrer. 1. Remove the rubber grommet from the ATO magnetic mounting bracket, and replace with the float valve. 2. Insert 1/4” polyethylene or similar size & material tubing into the top of the float valve. This should be connected directly to your ATO feed pump. Check to ensure that all tubing connections are secured against pressure buildup. 3. Test the ability of the float valve to safely cut off the water flow from the ATO pump. With the ATO switch activated, simply lift up on the float valve and check that all water input stops. Maintenance 1. The ATO kit is designed to require no regular maintenance. The tube should be checked a few times per year to ensure that any sponges or algae do not grow large enough to completely block airflow. 2. The optional float valve contains a narrow opening for water flow. Every few months, check that this opening is free of debris or buildup, and perform a simple emergency shutoff test.