Pump Help
Printed From: Utah Reefs
Category: Help
Forum Name: EMERGENCY FORUM
Forum Description: If you have an Emergency post here and you should receive a quick reply.
URL: http://www.utahreefs.com/forum/forum_posts.asp?TID=45722
Printed Date: October 15 2025 at 11:15pm
Software Version: Web Wiz Forums 12.03 - http://www.webwizforums.com
Topic: Pump Help
Posted By: Clownfish45
Subject: Pump Help
Date Posted: December 29 2010 at 6:53pm
| All right I Have a Hydor Koralia pump in my nano tank and today I notice that the fan wasn't spinning. So I pulled it out and cleaned it up and plug it back in and the fan blade was bouncing around and was not spinning like it should. So my question is what is wrong with it and is there something I can do to fix it. I really need this pump up and running asap so any suggestions would be appreciated. |
Replies:
Posted By: BobC63
Date Posted: December 29 2010 at 7:09pm
|
Sometimes the impeller (the "fan") will spin backwards or jam if not installed properly.
Check to see that you installed it all the way into the base, and that the outer front cover is attached correctly (the ceramic shaft of the impeller should fit into a notch on the inside of the front cover).
If it is in straight and all the way, try plugging it in and then uplugging it a couple of times. Sometimes that will do the trick.
Last trick - if it is spinning backwards or 'bouncing' - take a skinny long object (a chopstick works great if you have one, or a butter knife) and stick it into the opening to stop the impeller from spinning the wrong direction, or to "push start" the impeller if it is not spinning at all.
Hopefully one of these tricks works for you.
------------- - My Current Tank: 65g Starfire (sitting empty for 2+ years) - * Marine & Reef tanks since 1977 * |
Posted By: CapnMorgan
Date Posted: December 29 2010 at 8:48pm
IMO this is the most common problem. Hopefully you're able to get it fixed without any issues. ------------- Steve http://utahreefs.com/forum/forum_posts.asp?TID=40637&PID=356246" rel="nofollow - My Old 180G Mixed Reef Currently: 120G Wavefront Mixed 29G Seahorse & Softies Running ReefAngel Plus x2 435-8 |
BobC63 wrote:Posted By: bfessler
Date Posted: December 29 2010 at 10:19pm
|
I've noticed that the Koralia pumps are a little tricky to reassemble after service and if you don't get the front of the shaft back into the small hole in the front cover it will cause the pump not to operate properly. I really like the wide flow pattern on these pumps though so it's worth the extra effort when servicing the pump. ------------- Burt An equal opportunity reefer, I support all hobbyists and organizations involved in Marine Aquarium Keeping. [email protected] |
Posted By: Clownfish45
Date Posted: December 30 2010 at 1:09pm
| Yea I tried that and the magnet spins but when I put the metal pin and the impeller through it just bounces around and really doesn't spin. It acts like it wants to spin but its like the magnet isn't grabbing the impeller to spin it. Not sure whats going on with it and if it is possible to fix it. Any ideas would be helpful. |
Posted By: boysty
Date Posted: December 30 2010 at 1:40pm
| I have seen this happen on alot of pumps. I just put the pump in the water and turn it on and when it bounces around i will just push it back with my finger or a small object and it aligns right up. |
Posted By: bfessler
Date Posted: December 30 2010 at 3:43pm
|
If the magnet and impeller are correctly assembled and the end of the metal shaft is properly secured in the front of the removable front cover there shouldn't be any bouncing around of the prop or shaft. The top of the metal shaft should be held securely in the hole in the middle of the cover and everything should spin freely. If there is still side to side movement then the impeller shaft is not installed correctly and will not spin. The power-head does run a little rough when out of the water so submerging it before startup will help eliminate the vibration you get when running the unit out of the water but there should be no side to side movement of the impeller shaft when power is applied. ------------- Burt An equal opportunity reefer, I support all hobbyists and organizations involved in Marine Aquarium Keeping. [email protected] |
Posted By: Clownfish45
Date Posted: December 30 2010 at 10:24pm
| Well I put it all back together and put it back in my tank and started it up and it still bounces and does like a half rotation and then starts bouncing again. It will not do a full rotation and it seems like it just gets stuck. I have two of these and they both have the same problem. I even switch impellers and magnets and got the same results. I'm not sure what to do now. It seems like they want to work but just can't spin the impeller. |
Posted By: Chad
Date Posted: December 31 2010 at 5:46am
|
sounds like the blade is seperated from the impeller and will need to be replaced. I have super glued some impellers after this happened and they work for a little bit but not long term. You can get a replacement koralia impeller for pretty cheap. ------------- What?! You pooped in the refrigerator, and ate the entire wheel of cheese?! I'm not even mad.... That's actually amazing! |
Posted By: Chad
Date Posted: December 31 2010 at 6:04am
|
"seperated from the impeller shaft" is what I meant ------------- What?! You pooped in the refrigerator, and ate the entire wheel of cheese?! I'm not even mad.... That's actually amazing! |
Posted By: Clownfish45
Date Posted: December 31 2010 at 10:40am
| Alright so for a temp fix I can super glue the bottom of the impeller to the top of the magnet and it should work? And then where do I find replacement impellers? |
Posted By: dons
Date Posted: December 31 2010 at 12:12pm
| I had the same thing happen and emailed Koralia and they sent me out a new pump within a few days, the pump was only about 2 or 3 months old. They say to not turn them on when out of water because it stresses the impeller also they need the pressure from the water to force the little impeller down into the shaft and that won't happen if they are out of water. |
Posted By: Clownfish45
Date Posted: December 31 2010 at 12:31pm
| Yea I emailed them a couple of days ago but haven't herd from them yet. How long do they take to respond back? |