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Fortifies immune system
GH & KH Range Aquarium Life 0º - 3º Discus
use once a month or with water changes as required to maintain pH
A skin will form over the glue upon contact with water
ISTA - Check Valve Stainless Steel hailea Fortifies immune systemOne way professional check valve (New Design). Small and compact, about 4cm long. More effective in stopping backward flow. Fits standard aquarium air pipe ~4mm internal diameter.
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