rena filtar canister filter - The Planted Tank Forum
 
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post #1 of 12 (permalink) Old 12-25-2006, 01:22 PM Thread Starter
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rena filtar canister filter

Has anyone figured out why these filters are so hard to get started after they are serviced?i've tryed about every thing i can think of but they seem to get an air lock in them that prevents them to start.regards,cornhusker
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post #2 of 12 (permalink) Old 12-25-2006, 01:50 PM
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Rock it back and forth and kind of tip it forward so the air can go out the hoses. Also, make sure that your hoses are air tight and there is no air in the intake hose.

Tina
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post #3 of 12 (permalink) Old 12-25-2006, 02:27 PM
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Do you bubble CO2 into, or anywhere near the intake? If so be sure to remove or turn off the CO2 before turning off the filter to pull it for servicing.

I've found it far easier to get running again if I use the method prescribed in the manual and do not add any water back into the canister before connecting the tubing. Your tubing should still have water inside it and when you push the locking valve down this will automatically start the water draining from the tank to fill the canister to the proper levels.

I know, I've tried to cheat and just fill the canister because I don't want to have to then top off the tank. Now I just give in, clean the filter, replace and prime the filter, and then add two gallons of water to the tank.
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post #4 of 12 (permalink) Old 12-25-2006, 03:12 PM
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The only time I had to prime my XP3's was when I bought and installed them.

Try to fill them up all the way after cleaning them. Works for me every time.


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post #5 of 12 (permalink) Old 12-25-2006, 03:21 PM
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I had this problem. Over and over I would prime it, put the locking valve down, and nothing would happen. After about 6x I figured out that the entire length of the hose (inlet and outlet both) have to be ABOVE the level of the filter. Because of my inline heater the outet dropped just an inch or two below the top of the filter and so it couldn't pump the air out to the tank. After I lifted that section of tubing up it filled right up.
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post #6 of 12 (permalink) Old 12-26-2006, 04:55 AM
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I have this problem with my xp3, xp2. What I do is unscrew the top 4 screws, dump out the water, put it in a sink with ice water in it, plug it in and it turns on first or second try.

90 gal.
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post #7 of 12 (permalink) Old 12-26-2006, 05:46 AM
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Quote:
Originally Posted by sNApple View Post
I have this problem with my xp3, xp2. What I do is unscrew the top 4 screws, dump out the water, put it in a sink with ice water in it, plug it in and it turns on first or second try.
What exactly does ice water do to prime the filter . . .?
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post #8 of 12 (permalink) Old 12-26-2006, 07:25 PM
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Quote:
Originally Posted by sNApple View Post
I have this problem with my xp3, xp2. What I do is unscrew the top 4 screws, dump out the water, put it in a sink with ice water in it, plug it in and it turns on first or second try.
I've done this too with just dumping water out of the lid and starting it up, but what does the ice water do?

It sounded differently too, the impeller would sound like a rattle in it when I needed to dump water.

Tina
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post #9 of 12 (permalink) Old 12-26-2006, 10:19 PM
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dumping Tap water directly into your filter is not really a great idea. the amoniumum in the tap can kill your bact colony.


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post #10 of 12 (permalink) Old 12-27-2006, 01:50 AM
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Quote:
Originally Posted by cornhusker View Post
Has anyone figured out why these filters are so hard to get started after they are serviced?i've tryed about every thing i can think of but they seem to get an air lock in them that prevents them to start.regards,cornhusker
hey corn, I had the same problem as you. Every water change was a nightmare. I tried everything too, so you are not alone. I think some are "lemons" so to speak, like anything else. I wrote Rena about it and called them, and nothing was ever done, and the thing was only 3 months old. I just gave up and switched.
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post #11 of 12 (permalink) Old 12-27-2006, 01:58 AM
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What exactly does ice water do to prime the filter . . .?
i found the motor is pretty hot everytime... it just works for me

90 gal.
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post #12 of 12 (permalink) Old 12-27-2006, 02:02 AM
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I just connect the manifold and let it sit all plumbed in for 3-4 minutes. Then I plug it in and it starts right up. I guess you gotta give it time to purge the air in the impeller.

Marcel
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