15 years of experience and for the first time I see such a product.
I am amazed that finally someone has put simple things into practice! Flow management. With a little plastic thing that you can easily move with one hand to adjust the flow. A hook for the bucket! Because we don't have three hands. It even has a connection at the end of the palace and you can connect it directly to a hose!! Very good construction. The bubble will show how long it will last, not because of quality but because of usage.
With closed eyes, just get it. I haven't tried it in fine sand. I will come back when I make the big aquarium with before and after videos.

Rating 6/5

My aquarium is 60X30X40, a total of 72 liters. This vacuum works perfectly, it's the best one I've ever bought. I set it to slow flow and clean with ease. It's worth every euro. Buy it with closed eyes

Very user-friendly, functions without any problems! Easy from the first use, with satisfactory suction, good quality. Suitable for aquariums up to 30 liters, I believe. Ideal for detailed cleaning.

It works very well in an aquarium up to 60-70 liters and easily removes algae that are found on the bottom or sludge or leftover food. It works as shown in the corresponding videos on YouTube