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  1. #1
    Senior Member coral's Avatar
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    used tanks a good buy?

    A friend has a 150 gal for sale at a hard to resist price ($100!) Makes me wonder if there's something wrong with it.
    What should I check for when buying a used tank?
    Is it true that slicone dries out & would need re-sealing?
    How do I sterliize or clean it?
    Any wisdom & experiences you have had buying used tanks would be great!
    Thanks!
    I've noticed that raising kids & fish are similar: Patience & dedication really pays off!

  2. #2
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    If it has been stored DRY you may have to reseal it but that's not a deal breaker. If there are no cracked panes and it holds water = no unseen leaks at the joints ...go get it...
    Rob

  3. #3
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    I agree, I'm assuming the friend is a real friend, right? Probably why it's such a good price!!! OneSaltcreep is correct. If it holds water fine with no leaks, take it!!!
    You can clean it with diluted muriatic acid or vinegar.

  4. #4
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    Even if it holds water but was stored DRY for any length of time I would clean as toutouche directed and re-seal it. That's an easy DIY job that will not cost much at all ... and you got yourself one hell of a deal.
    Rob

  5. #5
    Senior Member coral's Avatar
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    awesome!! Thanks guys!! I'm pretty excited about the idea... ooooh big tank... ohhhh!!!!! :jump3: But I don't want 150 gals on my living room floor either.. so I'll definitely reseal the tank--(if it's not already sold.. he had a couple of interested people,)
    Is there a certain sealant I should buy? Something I can pick up at Home Depot?
    thanks again for the great advice guys..
    I've noticed that raising kids & fish are similar: Patience & dedication really pays off!

  6. #6
    Senior Member clown_fish's Avatar
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    Ask him if he ever used any medications i.e copper in the tank as copper stays in sealant and is deadly to inverts in reef enviroment.
    90G bb mixed reef set up in April 2005. I had 40g mixed reef for one year before that

  7. #7
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    Aaaah!!! Clownfish has an excellant point that we also should have mentioned!!!
    As for the type of silicone, just buy the GE type that smells like strong vinegar and says 100% silicone rubber. Make sure you do NOT use the bathroom types as they have fungicides in them that are not good for the livestock.

  8. #8
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    GE silicone at any HOMEDEPOT is fine as suggested. It will say
    '' DOORS & WINDOWS'' and you can get it in black or clear.
    100% silicone. There are actually 2 seals[beads] of silicone on tanks. one between the panes and another that is on the inside seem and makes it look pretty. Just take a razor and go parallel with the panes of glass on the inside and remove the inside seem. cut the tip of your silicone tube at an angle[not to big of a hole] and do a nice even bead all along your inside seem. then with a wet finger[keep some water on hand] smooth out the bead. easy as pie! do all siliconing in one shot.

  9. #9
    Senior Member coral's Avatar
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    :thumb: Thanks guys...very good points. It's been stored dry, I'll ask about meds.

    thanks Johnny for the DIY info...you saved me from asking "how do I go about sealing it?!" I'll be back if I get the tank with a bunch more questions! Thanks again guys.
    I've noticed that raising kids & fish are similar: Patience & dedication really pays off!

  10. #10
    Senior Member Toooloud's Avatar
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    even if it has been medicated.. For 100 Bucks.. I would pick it up and take the time on a weekend and strip out all the old silicone and reseal it anyways.. takes you a few hours to do.. and cost you maybe another $10 in silicone.. just reuse the old plastic braces..

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