My version of a diy canister filter - The Planted Tank Forum
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post #1 of 36 (permalink) Old 03-13-2008, 01:25 AM Thread Starter
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My version of a diy canister filter

This is actually my second atempt at this, my first version was done using copper elbows and 5 minute epoxy by lepage. It worked for about 3 months but eventually the 5 minute epoxy turned gummy and lost it's hold. This time I'm using jb-weld with pvc. I made the holes with a glass and tile drill bit, and then reamed it big with a dremel using a tile cutting bit. The glass drill bit isn't absolutely necessary but i have it handy. The whole thing could have been done with just the dremel. The powerhead is a maxijet 400.






If the Jb-weld epoxy holds up for 5 or 6 months, I'll go ahead and scale this up a bit and build one out of a 4 litre jar and a larger maxijet.


Picture to show the flow

This is being used in a 10 gallon shrmp tank. The flow is more than enough for me.
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post #2 of 36 (permalink) Old 03-13-2008, 03:31 AM
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How the heck did you manage to drill a mason jar?

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post #3 of 36 (permalink) Old 03-13-2008, 05:04 AM
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Here's a trick I use on my ponds all the time. A cheap replacement for bulk head fittings, get PVC electrical conduit male and female adapters. they will screw together tight because elec. conduit has straight cut threads, unlike PVC which has tapered pipe threads.
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post #4 of 36 (permalink) Old 03-13-2008, 05:08 AM
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How do you get the water to flow out of the spraybar?

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post #5 of 36 (permalink) Old 03-13-2008, 05:17 AM
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Originally Posted by ZooTycoonMaster View Post
How do you get the water to flow out of the spraybar?
With the powerhead.

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post #6 of 36 (permalink) Old 03-13-2008, 05:22 AM Thread Starter
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Drilling the jar isn't hard. I just held it in my hand and drilled it. I used a drill bit that looks like this. http://power-tools.hardwarestore.com...it-652475.aspx

To make the hole bigger i just went around the hole with a dremel tile cutting bit.


The water is flowing in to the jar at the bottom and leaving the jar at the top then it goes into the powerhead which pumps the water back into the tank through the spraybar.

Bulk head fittings aren't gonna work well on a curved surface. You'd have to fill a huge gap with some kind of washer.
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post #7 of 36 (permalink) Old 03-13-2008, 06:29 AM
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Very nice job, but too bad your filter is not big.

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post #8 of 36 (permalink) Old 03-13-2008, 02:13 PM
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I think he said it's a prototype, Mr. backhanded compliment!

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post #9 of 36 (permalink) Old 03-14-2008, 03:39 AM Thread Starter
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Well it's not huge and it never will be. Hopfully i will make a bigger one though. I don't have jars larger than 4 liters so thats the maximum size I can make it. 4 liters isn't that small though, its 2 bottles of soda. I have an xp2 which is about 6 liters but if you compair the media holding capacity, I think a 4 liter jar holds more. The 2 media baskets of an xp2 looks to be less volume than a 4 liter jar.
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post #10 of 36 (permalink) Old 03-14-2008, 03:51 AM
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With the powerhead.
Well then how did you get the water to get sucked in to the canister/jar?

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post #11 of 36 (permalink) Old 03-14-2008, 03:54 AM
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With the powerhead!

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post #12 of 36 (permalink) Old 03-14-2008, 03:55 AM
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I kid, look at the first picture at the bottom of the jar, and you'll see the intake.

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post #13 of 36 (permalink) Old 03-14-2008, 04:13 AM
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So the powerhead at the top of the jar is powerful enough to suck up water from the other end?

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post #14 of 36 (permalink) Old 03-14-2008, 04:42 AM Thread Starter
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No its not powerful enough to suck it up. Thats not exactly how it works. It's assisted by a syphoning action of the water into the jar. The powerhead pumps it from the jar back into the tank.
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post #15 of 36 (permalink) Old 03-14-2008, 08:54 PM
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So the powerhead at the top of the jar is powerful enough to suck up water from the other end?
A powerhead is just a pump....meaning it PUMPS water! I think this is VERY basic.
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