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Thread: Metal in tank?

  1. #1
    Member SharkBait's Avatar
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    Metal in tank?

    Hey,

    I am building a water level and topoff system and i want to make no moving parts so I want to test for conductivity with two metal (stainless steel) screws in the sump. Is this safe for the tank?

    Thanks
    "Nothing happens unless first we dream."
    Carl Sandburg

    65g w/20g sump/refug 2X150MH Plus 2 Antics 80lbs LR
    Common Clown, Purple Fire Goby, Mandarin Fish
    Elibi Angel, 3 Bi-Coloured Chormis
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  2. #2
    Former Moderator a4twenty's Avatar
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    Quote Originally Posted by SharkBait View Post
    .... with two metal (stainless steel) screws in the sump. Is this safe for the tank?
    most grades of SS are fine in SW, just make sure not to use steel tools on them or there is a chance of embedding particles in the SS that will rust.

    PS: float switches are the preferred method for ATO's
    `

    120S RR tank with 60G basement sump / fuge

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  3. #3
    Member SharkBait's Avatar
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    Thanks.

    I agree they are but my setup will also measure salinity with the same probe. And I have a lot of extra stuff with internet viewing, lcd display and cooling.
    "Nothing happens unless first we dream."
    Carl Sandburg

    65g w/20g sump/refug 2X150MH Plus 2 Antics 80lbs LR
    Common Clown, Purple Fire Goby, Mandarin Fish
    Elibi Angel, 3 Bi-Coloured Chormis
    Acrapora, Varius Polyps, Frog Spawn
    More to come...

  4. #4
    liv
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    Former Moderator liv's Avatar
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    i'd stay away unless you can find the purest form of stainless like the "Superaustenitic stainless steels" used in surgical tools etc. But i'd stick with pure Titanium instead.

    moving.. so temporarily out of SW :b8:
    planning next tank, possibly 60x30x20 on 2x plasma.
    updated: 2011/05/30

  5. #5
    Former Moderator a4twenty's Avatar
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    i agree, if titanium is available in a form to suit your project it is definitely the way to go but if not a good 316SS ( surgical steel ) has great chemical resistance and if used in an oxygen rich environment should be able to maintain its oxide coating and prevent any corrosion.
    `

    120S RR tank with 60G basement sump / fuge

    Return Pump: Little Giant 4-MDQX SC
    Water Movement: MP40W, Seio 1500, (2) Hydor K4's
    Lighting: 400W SE MH with 10K Venture
    Skimmer: Euro-Reef RS250 with gate valve
    Other: RODI, RDSB, PO4/AC reactor


    My Gallery

  6. #6
    Member SharkBait's Avatar
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    Thanks this is great info. I will make sure I get either some titanium or high grage steel.

    Sharkbait
    "Nothing happens unless first we dream."
    Carl Sandburg

    65g w/20g sump/refug 2X150MH Plus 2 Antics 80lbs LR
    Common Clown, Purple Fire Goby, Mandarin Fish
    Elibi Angel, 3 Bi-Coloured Chormis
    Acrapora, Varius Polyps, Frog Spawn
    More to come...

  7. #7
    Moderator Krugar's Avatar
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    Why not order a set of MAG12.5 replacement screws from Danner? They *look* to be stainless steel & mine haven't rusted yet. (2 years & counting under water.)

    Cheers!
    There is nothing so permanent as a temporary measure.

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