SAND vs GRAVEL for fish tank and aquarium SUBSTRATE for beginners

SAND vs GRAVEL for fish tank and aquarium SUBSTRATE for beginners. Which is the better one for your fish tank? I had to do a lot of research on this one. You will be surprised on what I learned about these two substrates for you aquarium.

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00:00 Introduction
00:18 Sand Substrate
01:03 Gravel Substrate
01:58 Sand Vacuum
02:52 Gravel Vacuum
03:50 Fish tank with no substrate

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