I am familiar with Python cleaners because I kept large cichlid tanks (90 gallon and 75 gallon) 5 years ago and then gave up the hobby. I used one of the largest Python siphons that connected directly to the sink and allowed me to empty those large tanks quickly and efficiently. But that's a completely different assessment. Back to the aquariums. I have decided on nano aquariums. I have two 3l. acrylic cubes and a 2 gallon. Glass jar, so are significantly smaller, so small that at first I didn't even think about using such a tool to service the tank. Eventually, after struggling with the water quality in the tank, I started reading Revain reviews about these "mini" or "little" gravel scrubbers and decided I needed them. In addition to reading Python product reviews, I read others as well. I finally settled on Python based on my past experience with the company and the product, albeit with a much larger cleaner. OK.for verification. I am or was in the process of changing my substrates. I started with black coral sand, which looked very inviting but became more compact over time. I felt it wasn't ideal for the plants I'm growing. I also felt that this substrate traps dirt and organic waste, which contributes to poor water quality. It took me a while to realize that maintaining water quality in a 3 gallon aquarium is MUCH more difficult than it is in a 90 gallon aquarium. 90 gallons of water offers much more consistency in quality and more mistakes and less maintenance. The remaining 3 gallons. I had already cored the cube and started with black laterite, a porous clay better suited to plants and much larger than sand. This python worked great on both sand and laterite. The sand required more careful observation and manipulation with the scouring end/suction end/working end to allow the sand to fall back if accidentally picked up, but the suction was almost perfect for me in my opinion. Not overly powerful, but powerful enough to pick up debris and clear both sand and laterite. I know that many aquarists use sandy substrates, so this is an important takeaway for sand lovers. Laterite, although much larger than sand, is VERY light as it is a very porous clay, but Python did a great job with it. I liked the length of the tube and found I didn't have to do anything special to keep the outlet end in my bucket. It's soft and pliable, rolled up in a bucket and never moved. I cleaned the substrate until I vacuumed about 1/3 tank or 1 gallon. for a water change and it only took a few minutes so it was fast enough to limit cleaning time but slow enough to ensure the substrate was thoroughly cleaned. I'm very glad I chose Python. Heck, it was only $3.74 on sale! Free shipping as an "extra". I thought it was $3.74. If I don't like it, I throw it away and buy another product. I spend over $3.74 on my morning coffee! You can't always please EVERYONE. But I'm willing to bet that this python will make MOST people happy MOST of the time, and for $3.74 you're not risking much learning. That's easy! Sink and Siphon Set for Aquarium Python Pro-Clean Small
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