fishhands Posted November 29, 2015 Share Posted November 29, 2015 I was looking to upgrade my nano pump. I've settled on the mj900. Why does it have two specs? 230/1000 gph Link to comment
HarryPotter Posted November 29, 2015 Share Posted November 29, 2015 230 gph and 870 lph. Not sure about the 1000, where do you see that? Link to comment
fishhands Posted November 29, 2015 Author Share Posted November 29, 2015 The box,it says 230 power head mode and 1000 circulation mode. Both gph Link to comment
AZDesertRat Posted November 29, 2015 Share Posted November 29, 2015 If you turn it on its side and use it as a propeller pump/wavemaker it does 1000 GPH, as a powerhead or pump with little or no head on it, it does 230 GPH. Link to comment
fishhands Posted November 29, 2015 Author Share Posted November 29, 2015 So the hydor I have only rated at 240 is only 240? Or are you backwards. I am trying to figure my turn over. If what you say is true then my wave maker is really over 1000gph right? Link to comment
AZDesertRat Posted November 29, 2015 Share Posted November 29, 2015 Some pumps such as the MJ can be used as a powerhead with one impeller or a wavemaker with another. The suction inlet of the powerhead comes off, the propeller goes on and it moves water in a wide stream versus pumping it into a hose or pipe. Whic hydor are you speaking about? If it is the nano 240 then yes it is only a wavemaker at 240 GPH and cannot be used as a powerhead or pump. How do you intend to use the MJ, as a pump or powerhead to pump water from a sump or back chamber or as a wavemaker in the display just to circulate water? If it is as a wavemaker there are much better, smaller, more energy efficient, and quieter options such as the Nno 425 which is the same size as the Nano 425 or even the WP-15 or RW-4 variable speed wavemakers. The MJ in the wavemaker mode has a pretty big footprint for a small tank. Link to comment
fishhands Posted November 30, 2015 Author Share Posted November 30, 2015 I have the nano 240. I want to use the mj as a replacement return pump for my 24g cube. Will it only be 230gph? Will that be enough flow? 470 Link to comment
AZDesertRat Posted November 30, 2015 Share Posted November 30, 2015 Not knowing what your existing return pump is I couldn't say but 230 GPH is close to 10x turnover an hour which is in most refeers recommended range depending on what you are keeping. Link to comment
fishhands Posted January 31, 2016 Author Share Posted January 31, 2016 Took out mj and replaced with hydor 300gph for return less than half of power used and greater flow. Guess I'll use mj as salt mixing pump. Its huge with wave maker attachment. Not even considered for that. What is difference between hydor 425 and my 240. Can I change impeller and double my flow or is it the motor also.they are same size... Link to comment
AZDesertRat Posted January 31, 2016 Share Posted January 31, 2016 Same motor, different impeller. Link to comment
fishhands Posted February 3, 2016 Author Share Posted February 3, 2016 Will the larger impeller fit then or is the housing larger as well? Link to comment
Recommended Posts
Archived
This topic is now archived and is closed to further replies.