Black Vinyl Kink-Free Tubing, MM/UK Sizes - Sold by the Roll Stainless Steel no batteries are needed --

no batteries are needed -- all movements are powered by solar energy captured by a solar panel at the top of the head

This formula includes precise amounts of select

Includes hose barb multi-adapter to fit various hose sizes

This concentrated blend reduces toxic ammonia

Pump Head Type RPM A2-1

Black Vinyl Kink-Free Tubing, MM/UK Sizes - Sold by the Roll Stainless Steel no batteries are needed --This black kink free tubing is highly flexible and reinforced, won't crimp or collapse around curves or if buried under stones or dirt. Comes in a UV resistant, black color that makes it easy to hide and restricts sunlight, reducing algae growth inside the tubing. Metric sized, so may not fit well with American sized fittings Dramatically increases water flow