Metal hose clamps vs. plastic OEM hose clamps - The Planted Tank Forum
 
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post #1 of 5 (permalink) Old 09-11-2014, 08:27 PM Thread Starter
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Metal hose clamps vs. plastic OEM hose clamps

I'm setting up two large 2078 Eheim canister filters using green Eheim hose, the larger 16/22mm size. A 300w in-line hydor heater is being added in the middle of each of the tank return hoses. All this makes six lengths of hose with 12 end connections to make altogether.

All equipment hose attachment mechanisms are the same; a cone shaped barb you push the hose onto and a plastic ring you screw down to cinch up the hose. I started to question this type of connection mechanism when I initially attached a hose to one of the Eheim tank inlet spray bars. Pushed the hose all the way up, but when I screwed the included plastic ring down to cinch the hose it never caught well and screwed completely down past it's intended clamping point.

So I thought maybe it'd be better to use metal hose clamps instead. Is it common practice to use metal hose clamps in these applications or are they not recommended as they might wear the hose out more quickly than the other type connection?

Thanks
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post #2 of 5 (permalink) Old 09-12-2014, 04:32 AM
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I have used a lot of metal hose clamps for aquarium use, and they are just fine.
I do try to keep them out of the tank.
Some time ago I noticed some were labeled 'Marine Grade' and these had resisted rusting the best.
I have never known the metal hose clamps to cut into or erode the tubing.
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post #3 of 5 (permalink) Old 09-12-2014, 04:36 AM
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Just don't tighten them so tight the hose bulges out through the slots in the clamp ring and it should be fine. Though I wouldn't put them inside the tank.
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post #4 of 5 (permalink) Old 09-12-2014, 04:05 PM
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Quote:
Originally Posted by bradleyheathhays View Post
I'm setting up two large 2078 Eheim canister filters using green Eheim hose, the larger 16/22mm size. A 300w in-line hydor heater is being added in the middle of each of the tank return hoses. All this makes six lengths of hose with 12 end connections to make altogether.

All equipment hose attachment mechanisms are the same; a cone shaped barb you push the hose onto and a plastic ring you screw down to cinch up the hose. I started to question this type of connection mechanism when I initially attached a hose to one of the Eheim tank inlet spray bars. Pushed the hose all the way up, but when I screwed the included plastic ring down to cinch the hose it never caught well and screwed completely down past it's intended clamping point.

So I thought maybe it'd be better to use metal hose clamps instead. Is it common practice to use metal hose clamps in these applications or are they not recommended as they might wear the hose out more quickly than the other type connection?

Thanks
Confusion here somewhere? I don't find screw type attachments on the 2078? It uses a plastic clamping arrangement? Is it possible that you listed the wrong filter?

Reason for asking is the number of people who fail when first working with the screw down type attachments. To tighten, one has to screw the fitting counterclockwise rather than the traditional clockwise to tighten things.
But then these are not on the 2078's I see?
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post #5 of 5 (permalink) Old 09-12-2014, 04:28 PM
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You don't need hose clamps on the EHEIM connectors IMO. EHEIM knows what they're doing - their fittings won't leak unless you install them wrong.

I use the metal ones on any connections I have to things like custom spraybars and such. They work fine. No need for any type of clamps in the tank - doesn't matter if it leaks a little underwater lol

Also it may sound stupid but as stated in the post above you have to "unscrew" the fittings up over the hose to tighten. A lot of people screw this up because they don't understand how it works at first


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