best joining knot for similar diameter line?

[utahgolf]

would a blood knot be best and strongest for adding some more line to my reel? I have 12 lb fluoro on my reel and it's running low and I need to add some other 12 lb fluoro to it I have laying around. thanks for any tips or help.
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[bornfishin]

I would use a blood knot as well.
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[catmaster23]

Second that, can't beat the blood.
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[tubbyama]

blood knot or uni to uni. Similar strength.
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[FattyGreens]

Check out the crazy Alberto knot on YouTube by far the best one I have ever used. Super compact and very very strong! I have full confidence in it when I tie flouro to braid fishing structure, usually bends my hooks out before the knot even thinks about failing.
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[Igottabigone]

Depending on how much line you are adding, you could just tie a triple overhand knot. Easy to tie and super strong. Takes much less time than the blood knot too.
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[RockyRaab]

One more vote for uni-uni. It's called the "uni" because it is darn near a universal knot; you can adapt it to darn near any situation.
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[flygoddess]

Blood knot, or simpler knot, Triple Surgeons which is what I use 98% of the time[]
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