One simple way to check the water is to use a clean glass bottle, fill the bottle with the fish culture water and then leave the bottle in the water with the top off, and with the neck sticking out of the water.
(the neck; sticking; ) (One simple way to check the water; is; to use a clean glass bottle, fill the bottle with the fish culture water and then leave the bottle in the water with the top off, and with the neck sticking out of the water)
the neck One simple way to check the water
sticking is
to use a clean glass bottle, fill the bottle with the fish culture water and then leave the bottle in the water with the top off, and with the neck sticking out of the water