Magnets and Your Tank

[fmp47]

Same problem with Eshopps probe holder. Contacted them by e-mail with picture. NO response. Probably not salt water safe.

 

[Triggreef]

I lilke that you use clear for the pods, so you can easily see if something went wrong

 

[cromag27]

Exactly my intent. anything can happen with plastic welds, regardless of who made them.

 

[Reefpharmer]

This is an embarrassing question but I use several tunze powerheads and currently their stock magnet is not strong enough to hold on my 1 inch tank. I purchased a N52 magnet to see if it would work. It is in a shape on a square prism and the side that really attracts is the "thin" rectangle side. The large square surface does not line up properly, so the magnet is semi useless. How can I avoid this in the future? thanks!

 

[cromag27]

This is an embarrassing question but I use several tunze powerheads and currently their stock magnet is not strong enough to hold on my 1 inch tank. I purchased a N52 magnet to see if it would work. It is in a shape on a square prism and the side that really attracts is the "thin" rectangle side. The large square surface does not line up properly, so the magnet is semi useless. How can I avoid this in the future? thanks!

The magnet description should tell you which direction it's magnetized in. do you have a link for where you bought it from?

 

[Reefpharmer]

yes here is the link
https://www.amazon.com/gp/product/B00OTX3D1W/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

 

[cromag27]

Magnetized through the 1" Thickness. Poles are on the 2" x 2" surfaces.

 

[Reefpharmer]

ok I must be dense... doesnt that mean that the poles (2x2) should attract / repel another magnet? or does the "magnetized" side attract only?

sorry, its been a long time since i was in physics..

 

[cromag27]

ok I must be dense... doesnt that mean that the poles (2x2) should attract / repel another magnet? or does the "magnetized" side attract only?

sorry, its been a long time since i was in physics..

The 2x2 surfaces are the magnetized poles. they should attract to each other. BTW, those are insanely strong magnets so be careful!

 

[Reefpharmer]

ok thats what i thought. When I put the magnet next to jebao powerhead holders, it works as intended and attracts to the holder w/ the 2x2. When I place it next to the tunze inner magnet, it attracts with the side thats 1x2 and when placed w/ the 2x2 side, it pushes the magnet sideways and attaches offcenter on the 2x2 side, presumably because the real attraction is the 1x2 side.

 

[cromag27]

Ah, you're mix-matching magnets. yeah that can happen in that situation.

 

[Bob E]

Great information

 

[_NunoFerreira_]

A seller over here in the UK puts his magnets in the little plastic coin collector disks and seals them with epoxy. Never had any issue with the epoxy my self.

Hi,
Do you know what epoxy they use? Won´t it release any substance to the water?
Regards

 

[jason2459]

TLF mag clip...

Noticed today it has separated and must have been for a while

 

[_NunoFerreira_]

What glue can I use to fix this that's reef safe?

 

[cromag27]

Who made that?

What glue can I use to fix this that's reef safe?

 

[Rjramos]

Who made that?

Hmmm, looks like one of your pods?[emoji848]
In response, I would say sand the surfaces and use plexiglas adhesive.

 

[cromag27]

No, and no.

Hmmm, looks like one of your pods?[emoji848]
In response, I would say sand the surfaces and use plexiglas adhesive.

 

[_NunoFerreira_]

Hi,

I have been searching for some plexiglas adhesive
Anyone knows if this one is reefsafe:
http://www.loctiteproducts.com/p/epxy_plstc_s/overview/Loctite-Epoxy-Plastic-Bonder.htm

or any other suggestion?

Thanks !!!

 

[_NunoFerreira_]

Hi,

I have been searching for some plexiglas adhesive
Anyone knows if this one is reefsafe:
http://www.loctiteproducts.com/p/epxy_plstc_s/overview/Loctite-Epoxy-Plastic-Bonder.htm

or any other suggestion?

Thanks !!!

Found the TECHNICAL DATA SHEET:
NOT RECOMMENDED FOR:
- Applying at temperatures below 40°F (5°C) or above 70°F (21°C)
- Use in continuously wet areas, prolonged immersion in water or use in potable water systems

Any suggestion?