DIY canister filter - The Planted Tank Forum
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post #1 of 20 (permalink) Old 02-05-2015, 01:03 PM Thread Starter
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DIY canister filter

I think I might try this for my 20 gallon long. I was thinking about getting a canister filter because my bn pleco is messier than the rest of the fish combined, but I was googling canisters and they're way too expensive.



I priced most of the the DIY materials yesterday at walmart and it was about $30. The power head I found was rated for 300 gallons at about $10.



I'd probably have to mod the return valve for bettas, but would this be overkill for my tank?



https://m.youtube.com/watch?v=OxFb3EeZ7l8
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post #2 of 20 (permalink) Old 02-05-2015, 03:41 PM
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Why not a sump? It'll be cheaper & easier than the DIY. Also, very little chance of leakage.
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post #3 of 20 (permalink) Old 02-05-2015, 05:46 PM Thread Starter
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I'd rather stick with what I know. I did some research on sumps and it seems bulky and complicated.

I'm familiar with canisters and feel that I can properly make one.
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post #4 of 20 (permalink) Old 02-05-2015, 05:53 PM
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looks like a pretty cool idea.

let us know how it goes and post pics!

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post #5 of 20 (permalink) Old 02-05-2015, 07:07 PM Thread Starter
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Sure no problem. Just waiting for my tax return so I can buy everything.
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post #6 of 20 (permalink) Old 02-05-2015, 08:07 PM
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Almost every aquarium forum/group/whatever I've been on since the 90's has the topic of DIY cannister filters come up a couple times a year.

I've only seen one plan that looked like it would work, and it involved something like sections of 6-8" diameter pvc pipe, and was only cost effective because the person picked it up as scrap from a construction site. Cannister filters need to be able to withstand pretty decent pressure, and have really good seals. It's somewhat hard to do that with most DIY plans with out exceeding the cost of a commercial cannister filter.
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post #7 of 20 (permalink) Old 02-05-2015, 08:14 PM
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Notice that the maker of that filter had it just a foot or two below the water level in the tank. That distance equals the pressure inside the filter container, which is not designed to withstand pressure. If you have that 3-4 feet below the top of the water in the tank it could spring a leak, and siphon all of the tank water out onto the floor!

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post #8 of 20 (permalink) Old 02-05-2015, 09:10 PM
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The one that The King of DIY has up on his youtube is a better design. If Schedule 40 3" PVC blows up you did something wrong. All told the media capacity is around 200g per Seachem and the pump without media has a flow rate of 500gph. not including the media cost me about 50 bucks including the pump. Then again I like making stuff myself even if it is only slightly more expensive for a commercial version that may or may not work better.

HOW TO: DIY Canister Filter
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post #9 of 20 (permalink) Old 02-05-2015, 09:34 PM Thread Starter
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With all the things that can go wrong, maybe I'm better off spending the extra cash and getting a sun sun. At least I can return it then if something goes wrong :p
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post #10 of 20 (permalink) Old 02-05-2015, 10:00 PM
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Quote:
Originally Posted by Carmex View Post
With all the things that can go wrong, maybe I'm better off spending the extra cash and getting a sun sun. At least I can return it then if something goes wrong :p
Honestly, I'm a fan of DIY, but I think the canister filter is one area where commercial solutions seem like the best choice.


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post #11 of 20 (permalink) Old 02-05-2015, 10:18 PM Thread Starter
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Yeah. I really don't want my tank water to end up on the floor.
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post #12 of 20 (permalink) Old 02-06-2015, 01:06 AM
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The factor that I usually see being ignored is the ease of use. Having a canister that drives you crazy every time you need to clean it is not a good way to enjoy the hobby.
Little things go wrong when you start to use them. Like how do you get the lid off the bucket? You have to turn it several times so do you take the intake off the tank and turn the whole tube or do you get out the screwdriver and remove the tubing from the lid?
At what point does this not sound like fun?
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post #13 of 20 (permalink) Old 02-06-2015, 01:39 AM Thread Starter
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None of that sounded fun. In fact, it sounded downright terrifying. LOL
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post #14 of 20 (permalink) Old 02-06-2015, 08:44 PM
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Sometimes the little bugs are the worst bite.
Like not having a way to shut off the flow and disconnect the tubing from the tank to the bottom of the can. Does the guy clean the canister where it is now? I spill plenty of water as I do things and cleaning the canister in the living room is not gonna work!
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post #15 of 20 (permalink) Old 02-06-2015, 09:31 PM
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In my opinion if your are going to spend $50 on supplies, just get a sunsun canister. It the same price or just a little more for a larger one and would be way less headache. I love DIY and have built motorcycles, atvs, go karts, snowmobiles, and a pile of other stuff, but 50gal of water siphoning onto my floor is a no go.
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