Neptune Replacement DOS Head Cap Corals Three thick black bands run

Three thick black bands run over its pure white body

Helps reduce unwanted nitrate and phosphate when used as part of the Aquaforest probiotic method

nudibranches

Helps limit phosphate availability to undesirable algae and cyanobacteria

Integrated application stem on each tube

Neptune Replacement DOS Head Cap Corals Three thick black bands runNeptune Replacement DOS Head Cap Neptune Replacement DOS Head Cap is a replacement head cap for the Neptune DOS dosing system, sold individually for servicing one DOS pump head. Replacement Cap for Neptune DOS This part is used when the head cap on a Neptune DOS dosing pump is worn, damaged, missing, or needs to be replaced during service. It helps restore the pump head assembly without replacing the entire DOS unit. Head Cap Features Replacement head