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Originally Posted by Blaxicanlatino
thanks!!!
what exactly is a gravel vacuum and how do i use it?
what is a corey?
what if i decide not to get coreys? do i still need a substrate?
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A cory is a corydoras catfish.
A gravle vac is easy to use. Just stci kthe whole thing under water, then place a bucket under the tank. Feed one end of the vac into the bucket, and go across the gravel. It will remove the nasty stuff and keep the gravel there.
I highly advise using a substarte. Why dont you want to have it?