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Best way to remove old substrate?

989 views 7 replies 5 participants last post by  sketch804 
#1 ·
Currently have black diamond and going to swap with white sand

What's the best way to get the black diamond out? gravel Vac just doesn't create enough suction to really lift much out, any ideas?

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#8 ·
yup smaller the diamater the stronger the suction is, just basic physics..truthfully it doesn't really matter how 'long' the hose is for say, because if the hose is longer and hanging straight down thats just more water weight to build up the siphion/suction..
+1 for that works good!
Took my flourite black sand outa my tank on accident, and even with a normal siphion attachment on, it still takes some out...i'd prolly vaccum it before you do that just to prevent debris from getting stired up..@least thats just my 2cents for this one..
 
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