Tetra GC 30 762 312 - is not really

The GC 30 floor cleaner I've probably used the first and also the last time:
- It is intended for small pool and has a small tube diameter (better for gaps)
- The assembly was easy and fast, two retaining clips for the hose are.
- A strainer (2-3 mm holes) is fitted, good for small animals and snails.
- The hose was too short with 1.5m. To safely get to the bucket I had to extend 20cm.

The first usage:
- The GC 30 has no valve to adjust the flow rate (available as with the other models)
- Try dipping, quick shake and after a couple of the water then ran (so far so good).

Field Test: unusable returns:
- Suction by rapid shaking works apparently only in high water (water just below the handle). If the pool half empty, it was the then.
- Due to the lack of valve he sucks also too fast and much too high much gravel.
- Once angesaugter- and swirling gravel will not let go (he whirls ever in the pipe).
- After the tube 3-4 times touched down is repeatedly clogged completely with gravel.
- By tube compressing the cleaning must therefore be repeatedly interrupted.
- (Illogical: The vacuum cleaner is intended for small basins with small amount of water is precisely here a valve to control the flow would be necessary.!)
- For coarse Erdbestandteilen (greater than 2 mm) clogged the small screen very quickly.

Addendum:
Anyone who wants to tinker: The outlet has 7 mm diameter. By decreasing to 5 to 6 mm (about minus 15- 30%) does it again with the swirling gravel and released. For this purpose, for example, to reduce at the end of a small piece of tubing are inserted into the supplied hose (with me a 2cm pieces. 6 x 1.5 mm, etc.).