So you want to clean that gravel at the bottom of the tank?
I purchased an Internet Prime Gravel Cleaner recently to replace an aging
Algarde De-luxe Gravel Cleaner that broke, after using it, I find it easier to
use than the Algarde Garvel Cleaner, it primes easier just by plunging it into
the tank, just make sure the other end of the pipe is in the bucket or you get
water on the floor, as I did, first time in use it, the Algarde Gravel Cleaner,
has a pump mechanism to get it started, but I found the
Gravel Cleaner got easily blocked with mulm which reduced the syphon action.
Thumbs Up for the Interpet Prime Gravel Cleaner - a great improvement over the
original Algarde Gravel Cleaner but at a cost, The Interpet Prime Gravel Cleaner
is more expensive that the original Algarde Gravel Cleaner.