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While i don't remember the price, Costco sells a three pack of bleach at a surprisingly good price. 
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Shop-talk <shop-talk-bounces@autox.team.net> on behalf of Jeff Scarbrough <fishplate@gmail.com><br>
<b>Sent:</b> Thursday, May 19, 2022 7:38:28 AM<br>
<b>To:</b> eric@megageek.com <eric@megageek.com><br>
<b>Cc:</b> shop-talk@autox.team.net <Shop-talk@autox.team.net><br>
<b>Subject:</b> Re: [Shop-talk] Cleaning an oil tank</font>
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<div dir="auto">10% for 10 minutes is what we used in the biosafety business.  There may be other products such as quaternary solutions that might also work at lower rates.
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<div dir="auto">10% of a biocidal bleach could be 15 jugs - could get expensive.  There <br>
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<div dir="auto">Aren't their products that prevent biosludge in Diesel fuel? We used to get a jug of something to pour in the 1400 gallon generator tank to keep it from growing...Would that work to eliminate the problem?  </div>
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<div dir="auto">I found this link to a video that may be a sales pitch, but illustrates one such product to clean the tank.</div>
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<div dir="auto"><a href="https://youtu.be/mMLrtVa6yVI">https://youtu.be/mMLrtVa6yVI</a><br>
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<div dir="auto">Search I used to find that: <a href="https://www.google.com/search?q=eliminate+biosludge+from+diesel+storage+tanks&oq=eliminate+biosludge+from+diesel+sto">
https://www.google.com/search?q=eliminate+biosludge+from+diesel+storage+tanks&oq=eliminate+biosludge+from+diesel+sto</a></div>
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<div dir="ltr" class="x_gmail_attr">On Thu, May 19, 2022, 09:26 <<a href="mailto:eric@megageek.com">eric@megageek.com</a>> wrote:<br>
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<font size="2" face="sans-serif">How much bleach would I need for that size tank?  What water mixture ratio do you think would work?</font>
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<font size="1" color="#5f5f5f" face="sans-serif">From:        </font><font size="1" face="sans-serif">Jeff Scarbrough <<a href="mailto:fishplate@gmail.com" target="_blank" rel="noreferrer">fishplate@gmail.com</a>></font>
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<font size="1" color="#5f5f5f" face="sans-serif">To:        </font><font size="1" face="sans-serif"><a href="mailto:eric@megageek.com" target="_blank" rel="noreferrer">eric@megageek.com</a></font>
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<font size="1" color="#5f5f5f" face="sans-serif">Cc:        </font><font size="1" face="sans-serif">"<a href="mailto:shop-talk@autox.team.net" target="_blank" rel="noreferrer">shop-talk@autox.team.net</a>" <<a href="mailto:Shop-talk@autox.team.net" target="_blank" rel="noreferrer">Shop-talk@autox.team.net</a>></font>
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<font size="1" color="#5f5f5f" face="sans-serif">Date:        </font><font size="1" face="sans-serif">05/19/2022 09:20 AM</font>
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<font size="1" color="#5f5f5f" face="sans-serif">Subject:        </font><font size="1" face="sans-serif">Re: [Shop-talk] Cleaning an oil tank</font>
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<font size="3">Fire is an interesting solution, and will certainly inactivate most biologicals, but can be difficult to tame.  </font>
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<font size="3">What about bleach?</font> <br>
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<font size="3">On Thu, May 19, 2022, 08:47 <</font><a href="mailto:eric@megageek.com" target="_blank" rel="noreferrer"><font size="3" color="blue"><u>eric@megageek.com</u></font></a><font size="3">> wrote:</font>
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<font size="2" face="sans-serif">Hey gang, it's been quite here lately.</font><font size="3">
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I have a 275 gal oil tank that I use for diesel fuel for my tractors.</font><font size="3">
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It got the bio-sludge in it.  I have removed all the oil (there was only a little left in it.)</font><font size="3">
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What is the best way to clean this?  Should I light a fire it in?  Water?  simple green?</font><font size="3">
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Any ideas?</font><font size="3"> <br>
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Thanks.</font><font size="3"> <br>
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Moose</font><font size="3"> <br>
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