Works fine and is also adjustable!

I have 5 years a Tetra GC40 and use these for regular cleaning my 180L aquarium. Now with my existing Tetra GC40 usually tap me is broken. Due to the good experiences over the years I have decided on a replacement by the same model. Beihnahe I had the GC40 not appointed me as the product picture on the package does not match the original part. It represented no control tap, but this is the most important at GC40. Meanwhile, the new part is with me, and yes, the controller is present and the packaging is still the bottle image. As to a Fa. Tetra understand ...

Benefits:
- Infinitely variable flow: Could not be better. You can control exactly how much is to be drawn. This I suck the aquarium is not equal to empty and can also control how intense the gravel should be durchgewirbeld.
- Eeasy-start function: meet some quick back and forth movements of the suction under water and even the water flows
- Guard: This fish is not drawn into the tube. In very small shrimp / fish (- Quality: Kunsstoff and hose sufficiently stable

Disadvantage:
- In sandy substrates, it can happen that fine grains of sand make the controller stiff. That was the reason why my regulator lever is stopped after 5 years. Rather unsuitable Thus for fine sand. Normal gravel is not a problem.

Conclusion: Due to the simple Easy Start system and the controllability of the water flow is a good system for cleaning aquariums. The Prodktabbildung on the packaging is wrong, but this is negligible. Even a lifetime (for me) of 5 years at the price okay.