View Full Version : Tank Safe Magnets


schwimmair
04-23-2009, 1:02 PM
Anybody know of a place that sells tank safe magnets? I am not looking for the Mag-Floats just something that will hold a piece of acrylic over my underwater inlets.

Thanks,

Adam

elFloyd
04-23-2009, 1:08 PM
I just bought a bunch of these.... surprising how strong they are!!!

http://www.gaussboys.com/ndfeb-magnets/B2506E-N42.html

weaglereefer
04-23-2009, 1:09 PM
Any plastic or epoxy coated magnets should work fine.

http://www.gaussboys.com/magnets/Epoxy-Coated-Magnets/

http://www.magnet4less.com/index.php?cPath=1_123

http://www.kjmagnetics.com/products.asp?cat=164

LilRobb
04-23-2009, 1:14 PM
They all say COPPER coated????

weaglereefer
04-23-2009, 1:17 PM
Had some in my tank since mid February. Salifert Copper test kit reads 00, less than .05mg/l

Dakota9
04-23-2009, 1:36 PM
Adam,
If you end up ordering some, would you be interested in a group buy? Magnets come in handy, but are pricey and we dont always need a frag-mag that can be purchased locally.





Anybody know of a place that sells tank safe magnets? I am not looking for the Mag-Floats just something that will hold a piece of acrylic over my underwater inlets.

Thanks,

Adam

schwimmair
04-23-2009, 1:50 PM
Dakota9 (I can't remember your name to save my life, can you please give it to me again), yes I will setup a group buy when I order them. Should be sometime next week.

Adam

schwimmair
04-23-2009, 2:28 PM
Hi, I got this reply back from Kevin at K&J Magnetics. They responded back to me in under 5 minutes. Anybody with that good of customer service earns my business. I will do a group order next week.

Adam

"The magnet is first coated in a triple layer of Nickel-Copper-Nickel and then plastic coated. The copper is not exposed in any way. It is covered by a layer of nickel and then the plastic layer. If you have any other questions, please do not hesitate to ask."

Best Regards,
Kevin Stayer
K&J Magnetics, Inc.
www.kjmagnetics.com (http://www.kjmagnetics.com/)

thewarbrd
04-23-2009, 2:41 PM
I bought some of those 'epoxy coated' ones from magnets4less a couple months ago to use to hold up a frag rack... The coating isnt much more than a spray paint layer thick coating and after just a few weeks the coating was already peeling off and the magnets were rusting. So if you put anything like that in your tank it's best to completely cover them in something like silicone (or in my case I completely surrounded the spare set I replaced the corroding ones with in the hot glue I attached them to the egg crate with) to keep water away from them.

Dakota9
04-23-2009, 2:45 PM
Adam, which particular magnets were you thinking of from that supplier, seems the more of any item you buy, the cheaper they get?


Michael Dakota Everhart

schwimmair
04-23-2009, 2:55 PM
Michael, here is their page:

http://www.kjmagnetics.com/products.asp?cat=164

here is their shipping page:

http://www.kjmagnetics.com/order.asp

This looks like the best option:

USPS
We offer flat rate shipping through the US Postal Service. USPS Priority Mail is a flat rate of $7.00 and USPS First Class Mail is a flat rate of $5.00. With USPS shipping, there is no tracking information provided and delivery times are not guaranteed. Delivery confirmation is provided when available. First Class Mail delivery can take up to 7-10 business days and Priority Mail usually takes 2-5 business days to most locations. If there are no outstanding issues with your USPS order, it will ship within 1 business day.

schwimmair
04-23-2009, 2:57 PM
Not sure if I am going to get the plastic or rubber coating, which would be more durable in saltwater?

Adam

Dakota9
04-23-2009, 3:35 PM
I think either would plastic or rubber would be fine. Browse the site and let me know what you are buying, then I'll decide (quickly) what I'd like

schwimmair
04-23-2009, 8:37 PM
Michael, I am going to order 4 of these:

http://www.kjmagnetics.com/proddetail.asp?prod=BX084PC-BLK

This magnet has the pull force of 16 lbs.

Does anybody know what the pull force is on a Mag-Float?

Adam

Dakota9
04-23-2009, 9:26 PM
I was actually thinkin about 8 of these.

http://www.kjmagnetics.com/proddetail.asp?prod=D84PC%2DBLK

Not as powerful, but I think 5.5 lbs of PF would do in a tank.....

weaglereefer
04-24-2009, 12:14 AM
Just FYI for you guys, the ones I got have 21lbs of force, and it took 3 of em stacked on the outside of the tank with one on the inside for it to be sturdy. If I had to order again, I'd go for some with at least 40lbs of force...

They seem very strong but inside the tank, they're not...

schwimmair
04-24-2009, 12:18 AM
au01st, I will go with a more powerful one.

Thanks,

Adam

weaglereefer
04-24-2009, 12:21 AM
Yeah, I was very surprised they didn't hold. The problem is once the rack starts tilting, it's game over, so the bigger the magnets are (more surface area) and stronger, the better.

Expensive lesson when I was ordering 12 magnets at a time...

Dakota9
04-24-2009, 12:32 AM
Yeah, I was very surprised they didn't hold. The problem is once the rack starts tilting, it's game over, so the bigger the magnets are (more surface area) and stronger, the better.

Expensive lesson when I was ordering 12 magnets at a time...


Were you using them to hold up a frag rack?

weaglereefer
04-24-2009, 12:38 AM
Yup...