These are the most frequently used words in this book.
algae
aquaria
aquarists
aquarium
aquatic
beautiful
best
bottom
c02
carbonate
change
co2
colors
come
composition
condition
content
data
day
different
discus
driftwood
enough
even
fertilization
fertilizer
filter
filtering
first
fishes
five
garden
gh
good
grass
green
grow
growth
hardness
home
island
japanese
kh
kind
large
layout
leaves
less
level
light
lighting
liters
long
look
maintenance
mountain
nature
need
nitrate
nitrite
no2
now
oiso
once
people
ph
photographing
place
plants
power
put
right
river
rocks
roots
sand
sea
seconds
should
since
species
style
substrate
supply
take
tank
temperature
three
time
total
two
types
use
used
value
water
waterscape
week
work
years