Neptune DOS DDR Tubing - 4 Meter Pufferfish Includes information to help correct

Includes information to help correct unsafe water conditions

For Hydra 32HD and 64HD fixtures

The 300 gram size gives reef keepers more working material for larger aquascaping jobs

Optically clear glass supports accurate colorimeter and photometer readings

Neptune DOS DDR Tubing - 4 Meter Pufferfish Includes information to help correctNeptune DOS DDR Tubing 4 Meter Neptune DOS DDR Tubing 4 Meter is replacement flexible tubing for Neptune DOS and DDR dosing setups, sized to match standard Neptune DOS tubing specifications. 4 Meter DOS and DDR Tubing This tubing is useful for replacing worn dosing lines, extending an existing DOS installation, or setting up clean runs between a Neptune DOS, DDR reservoir, additive container, and aquarium sump. Tubing Details Flexible tubing for