Koralia Evolution running backwards?
- Thread starter therman
- Start date
I'm convinced the cycle time is too short on the red sea wavemaster. Mine fatigues the plastic grill and eventually breaks the anti-reverse peg off, it has done it 3-4 times now. They keep sending me new the new front impeller grill/cage part, but now I'm switching to the aquarium systems Natural Wave timer so I can set the cycle to a longer duration. I haven't had any problem with the pumps I've been running on those once I installed new bushings (running about 8 months).
There are two causes of reversal in the Koralia Evolutions.
You could have the old version of the bushing from the first production of them. If this is the case, you simply request new bushings from Hydor USA and they will send them to you for FREE. You can see a photo of the old version verses the new version.
The other possibility is that the from cover is damaged. There is a black bumper in the front cover. If it is missing or damaged or if the plastic holding it in place is damged the pump can run backwards on start-up. This is also solved by contacting Hydor USA and asking for a replacement cover. This part is also FREE.
You could have the old version of the bushing from the first production of them. If this is the case, you simply request new bushings from Hydor USA and they will send them to you for FREE. You can see a photo of the old version verses the new version.
The other possibility is that the from cover is damaged. There is a black bumper in the front cover. If it is missing or damaged or if the plastic holding it in place is damged the pump can run backwards on start-up. This is also solved by contacting Hydor USA and asking for a replacement cover. This part is also FREE.
TWallace
New member
I've had 2 Evo 1400s for over a year. I do not use a wavemaker. They almost always start up in reverse (at least 90% of the time). I use a plunger from a test kit syringe to force it to spin correctly (stick it in through the front of the grate until the propeller strikes it and flips direction).
After reading this thread, I thought I'd just take it apart and reseat the bushing, and all would be well. However, when I took it apart, the bushing was already seated correctly in both pumps. I cleaned the algae off all parts and put them back together. When I turned them on, they both started up backwards still.
I've just contacted Hydor through their website to get the new bushing, but at this point I don't think that's the problem in mine. It seems like in mine, when it starts up in reverse, it's supposed to strike a peg on the back side of the grate, but that never happens.
After reading this thread, I thought I'd just take it apart and reseat the bushing, and all would be well. However, when I took it apart, the bushing was already seated correctly in both pumps. I cleaned the algae off all parts and put them back together. When I turned them on, they both started up backwards still.
I've just contacted Hydor through their website to get the new bushing, but at this point I don't think that's the problem in mine. It seems like in mine, when it starts up in reverse, it's supposed to strike a peg on the back side of the grate, but that never happens.
thirdgen1987
New member
I dont post on here much.... As i forgot I had an account. But after having these same problems with my 750 and 1050 I thought I'd throw my .02 in.
I tried the bushing things to also find that they were seated correctly... My problem, which was so easily overlooked(my own stupidity for jumping to conclusions that it was the bushing), the little rubber stops on the inside of the front grill had been dislodged and lost in my tank.
I solved the problem by going to the local hardware store and buying 1/4 inch thick faucet washers, trimmed them down to size, and super glued them in place of the missing bumpstops. This has only been going for a few hours but I have my koralias on a red sea wavemaker and I have not had a single reverse start since.
I am going to try and get some pics of what I am talking about just to clarify anything that needs to be clarified. BUT so far so good thankfully.
I tried the bushing things to also find that they were seated correctly... My problem, which was so easily overlooked(my own stupidity for jumping to conclusions that it was the bushing), the little rubber stops on the inside of the front grill had been dislodged and lost in my tank.
I solved the problem by going to the local hardware store and buying 1/4 inch thick faucet washers, trimmed them down to size, and super glued them in place of the missing bumpstops. This has only been going for a few hours but I have my koralias on a red sea wavemaker and I have not had a single reverse start since.
I am going to try and get some pics of what I am talking about just to clarify anything that needs to be clarified. BUT so far so good thankfully.
thirdgen1987
New member
I dont post on here much.... As i forgot I had an account. But after having these same problems with my 750 and 1050 I thought I'd throw my .02 in.
I tried the bushing things to also find that they were seated correctly... My problem, which was so easily overlooked(my own stupidity for jumping to conclusions that it was the bushing), the little rubber stops on the inside of the front grill had been dislodged and lost in my tank.
I solved the problem by going to the local hardware store and buying 1/4 inch thick faucet washers, trimmed them down to size, and super glued them in place of the missing bumpstops. This has only been going for a few hours but I have my koralias on a red sea wavemaker and I have not had a single reverse start since.
I am going to try and get some pics of what I am talking about just to clarify anything that needs to be clarified. BUT so far so good thankfully.
I tried the bushing things to also find that they were seated correctly... My problem, which was so easily overlooked(my own stupidity for jumping to conclusions that it was the bushing), the little rubber stops on the inside of the front grill had been dislodged and lost in my tank.
I solved the problem by going to the local hardware store and buying 1/4 inch thick faucet washers, trimmed them down to size, and super glued them in place of the missing bumpstops. This has only been going for a few hours but I have my koralias on a red sea wavemaker and I have not had a single reverse start since.
I am going to try and get some pics of what I am talking about just to clarify anything that needs to be clarified. BUT so far so good thankfully.
Crush Coral
New member
I bought 2 1050s when they first came out. I thought they were great till after a couple weeks use they would not restart. I would have to tap on them or mess with the cover to get them going again. Still the same problem. Work 2 weeks then have to clean them.
Well, there must be at least a third reason. I have replaced the old bushings with new bushings (Free) on my Evo 750, and the black bumper on the cover was not damaged but I replaced it (Free) anyway. Afterwards, it still ran in reverse. It now just occupies shelf space in my garage.
+1....I did the same thing...they are junk...worst I've ever used...
windyridge
Fish Mother
Mine started in reverse a few weeks after I got it, I turned it off and on and then it started properly. No problems since. Why does Koralia persist in selling these if they are defective?
cherubfish pair
New member
Here's a picture someone posted on another thread. Comes from Hydor. He didn't leave any words--just the link to this picture. It didn't help me as I already knew how these three went together. Just my .02
http://www.hydor.com/uploads/immagin...71a5d27602.jpg
http://www.hydor.com/uploads/immagin...71a5d27602.jpg
I woke up and found my yellow tang stuck to the front of the powerhead that was running in reverse. It will grab a healthy fish if they get to close.
windyridge
Fish Mother
That's unsettling...are you sure it was healthy?
Yes he was. I never saw any indication from him to think otherwise. He didnt make if long after being stuck though.
cherubfish pair
New member
I will install my EVO with an updated bushing sometime tomorrow.
Hope this Helps.
Hope this Helps.
I actually just did a search about this because I have one 750 that runs backwards. I can take it out and clean it and make sure it is running correctly and then it starts running backwards again. I am getting so irritated. Mine is NOT set up on a wavemaker it is just plugged straight in. I don't think my tank is getting enough flow because of this. :/
obet_carlos
Member
the front grill of my evolution 750 suddenly broke off.. any one with the same problem?
Skipponator
New member
My guard did on my 1050, kinda disintegrated after 4 mos of use. Both my 1050 and 1400 are working fine on my RK2.
