Fluval Gravel Vac HSD Wet Food Promotes healthy coat growth and 18 1600 14 BU Promotes healthy coat growth and an added layer of shine thanks to Amazon Rainforest Natural Essential Oils chronic pancreatitis) Not so good for: growing puppies pregnant or lactating females active working dogs Effectively traps dirt and debris Easy Start siphon for quick priming – starts with just a couple of pumps Thumb operated flow regulator allows you adjust speed as you clean Gravel guard prevents clogging Tube extension included for larger tanks and hard to reach areas Suitable for all substrates (sand rock) For use in freshwater and saltwater aquariums