The Planted Tank Forum - View Single Post - Simple DIY Drop Checker (V2 is Alive! 3/31)
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Old 03-26-2012, 08:43 PM   #52
galabar
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I like the fluval drop check. It seems to have a fairly low internal volume with a large water contact area:

http://ca-en.hagen.com/Aquatic/Water...plements/A7551

It also comes with an all-in-one indicator solution for lazy people like me.
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My 40 gallon breeder (and 20 gallon long): http://www.youtube.com/watch?v=4ta07C0y0nk
My 10 gallon with PAR30 LED: http://www.youtube.com/watch?v=8rbms5asKmA
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