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Unread 10/14/2015, 02:31 PM   #1
canada55
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Join Date: Oct 2007
Location: Vancouver island
Posts: 75
Maxijet problem

I'm using your maxijet pumps for feed pumps to various filters, reactors, etc. and I'm use a ball valve to reduce the flow to the necessary volume. However, the back pressure created by the reduced flow is damaging the impellers and stripping the lock that the impeller engages on the shaft. The impeller are just free floating on the shafts now. I've had about 4-5 of your pumps do this, the most recent was only 3 weeks old. Is there a was to fix/modify the impeller to the magnetic shaft permanently. And would there be a problem if it was permanent?



The impellers are the purple ones, Sorry this is difficult to explain.

Another problem I've been having is the impeller blades are breaking off..


__________________
- 180g DT, 90g (for anti-social group), 40g Frag, 40g (acclimating newbies before DT). 290g sump.
- lots of Tangs, heavy feeding.
- Having ongoing problems keeping Nitrates down.

Current Tank Info: 180g bowfront
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Unread 11/03/2015, 09:36 AM   #2
canada55
Registered Member
 
Join Date: Oct 2007
Location: Vancouver island
Posts: 75
Just order another maxi-jet 1200, used it to mix up a fresh batch of SW in a 5 gallon bucket. two blades broke off. Sorry Marineland, going to have to start looking at other brands...I've got a pile of 8 Maxi-jets all with broken impellers. I realize these pumps a cheap enough, but I need reliability more and I'm willing to pay for that.


__________________
- 180g DT, 90g (for anti-social group), 40g Frag, 40g (acclimating newbies before DT). 290g sump.
- lots of Tangs, heavy feeding.
- Having ongoing problems keeping Nitrates down.

Current Tank Info: 180g bowfront
canada55 is offline   Reply With Quote
Unread 12/02/2015, 12:10 PM   #3
jayball
Registered Member
 
Join Date: Mar 2014
Location: Maryland
Posts: 1,671
Take a look at the similar pump made by cobalt. I have had mine for over 18 months now, it is always throttled with a ball valve and when I change the media I just close the valve. Never had an issue. They are more expensive but they are the high quality original version.


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Unread 12/10/2015, 09:50 AM   #4
canada55
Registered Member
 
Join Date: Oct 2007
Location: Vancouver island
Posts: 75
Thanks Jayball, I will look at that pump...just had another maxi-jet pack it in this morning...

I did try a small EHEIM 300 but I think I bought too small of a pump..not enough pressure...I'll try a larger EHEIM as well...


__________________
- 180g DT, 90g (for anti-social group), 40g Frag, 40g (acclimating newbies before DT). 290g sump.
- lots of Tangs, heavy feeding.
- Having ongoing problems keeping Nitrates down.

Current Tank Info: 180g bowfront
canada55 is offline   Reply With Quote
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