Python Syphon for Gravel Cleaner ,Black,2.05 x 2.05 x 6.05

I initially thought that it doesn't work but the problem is the poor quality of the instructions. So I searched Amazon.com reviews & found a review by Fredin J. Pallikal. "In order for it to work you must have the draining end of the pump facing UP(They completely failed to mention this in the instructions). Once you've primed your suction tubing you can point the drain down into your bucket or wherever you're draining. The reason for this is the valve will be open if the drain end is facing down so when you squeeze the air pressure won't build up--air will just go out the drain end." So it works but isn't worth the money.

Easy to use. Easy to dismantle to clean when blocked with gravel. Does leak from where connectors fit in rubber bulb so needs to be kept in a bucket or water will get on the floor.

Have tried this out three times and three time is has failed. Leeks at the necks and green fitting keep popping out of black rubber. Does not siphon properly have tried putting hoses at both ends and hose straight into drain but no water flows.

Bought it because the price had dropped. Not sure I would have bothered if it had been more expensive. Works 'ok'.

Biggest load of rubbish I have ever know, trust me its not worth the money

Great. Its good to know that when the siphon squeeze stops working we can just buy a replacement piece vs buy a brand new siphon every time. We have 4 fishtanks in the house and use the siphon constantly

Since the description is pretty lackluster I will re-describe the product: First of all it is made for tubing that is either 1/2" or 1/4" These are the most common sizes for gravel suction hoses. It comes with 5 parts pre-assembled and a extra adapter for the 1/4" tubing. The rubber squeeze bulb is just that. There is the 1/2" adapter on one end. The other end is the the drain end which has 3 parts making a ball valve. Also this product is made in the U.S.A. At first I didn't think the thing worked I squeezed several times and nothing. I read the instructions and it still didn't get it to work. Thinking that maybe it was clogged I opened it up (super easy to do, which is great if the pump every gets clogged with stuff you suck up)and realized how it worked. In order for it to work you must have the draining end of the pump facing UP(They completely failed to mention this in the instructions). Once you've primed your suction tubing you can point the drain down into your bucket or wherever you're draining. The reason for this is the valve will be open if the drain end is facing down so when you squeeze the air pressure won't build up--air will just go out the drain end. Anyway the product works great, which is great because although I love Snailbert (my snail) I am absolutely disgusted by him at the same. Now I don't ever come in contact with the water in his tank. One downside is that I personally think it's a bit expensive, but maybe rubber is expensive or maybe it's because it's made in the the U.S.A.

No se adapta a las medidas de mangueras standard. Ya cuando el nivel de la pecera es bajo no succiona correctamentente. Muy descpcuonado del producto

Edit 3/9/22 this siphon bulb worked so well at first I gave it five stars. Now it doesn't work at all. The product life is just too short to give it any more than one. Flexing the bulb causes the two connections to lose the seal over just a short amount of time. I'm going to try caulking it and hope that I can get a little more use out of it. This siphon bulb works so well and with so little effort. You only need to have the bulb 2-3 inches below the end of your influent hose for it to work. It's also very sturdy unlike most aquarium bulbs and I anticipate it will last a long time. I didn't have any problems with the bulb leaking when I switched from the 1/2" to the 1/4" adapter. I only did this because I already had 1/4" ID tubing. It should be noted that the 1/2" adapter is actually 9/16" so you will need to use a heat gun or very hot hairdryer to install 1/2" ID tubing. If you want to fit a hose on the effluent side, which I did, it's slightly less than 7/8". I recommend using 3/4" ID vinyl tubing and a heat gun for a drip free fit if you need to run the effluent off somewhere.

I ordered this the other day, and within two days, I received it. I am very happy that I purchased this product because now instead of sucking on the hose and then quickly lowering the hose in the bucket, I just pump this two to three times, and the water starts to flow! Also, it is a great fit as the 1/4 inch adapter fits snugly on my python gravel cleaner hose.