Update October 21, 2021: I recently bought 2 more pumps and both times they didn't come with a controller (which allows you to turn the pump on and off and set the flow rate). The seller forgot to turn on the controllers. I contacted the seller and here is their response: Hey friend, the smaller pump doesn't have a controller. Larger pumps still have a controller, but Revain only stock about 17 units. We recently sent Revain a larger pump without a controller, Revain may not have assigned you a pump with a controller. I am sorry to inform you that in the future we will no longer supply controllers, this is the company's decision, I hope you can understand. If you receive a pump without a controller, you can return the money. Many Thanks. So if you order a pump (big or small) there's a good chance you won't get a controller. What's good about it? They don't even sell the controller separately. And controllers aren't universal either. So if you don't already have a controller and just need to replace the pump, just order. Otherwise, if you are looking for a pump for the first time, it will not work without a controller module. abominable. Original Review: This pump works just as well as the big brands out there. It's super quiet and powerful. I've had it running 24/7 for the past 6 months with no issues. The 10 minute feeding option is ideal when you need to turn off the pump for a short time for feeding or other maintenance. Pressing the feed button twice turns the pump off until you press it a third time to turn it on. Just like this one. Not sure why one review said it leaked and had to use teflon tape. If you use the rubber gasket that came with the kit, it seals perfectly and doesn't leak. (It came with 2 rubber pads, one as a spare.) The reviewer probably used the rubber pads incorrectly. Another reviewer said the pump feels very flimsy because of the cheap plastic? Considering it will be sitting in a palette I didn't see it as very weak. I'm not sure what kind of plastic the reviewer is expecting. Compared to other expensive brands, I don't see much of a difference in the quality of the plastic. I have my pump set halfway to 110. (Range from 100 to 120, or 20 different power settings.) At 110, that's powerful enough for my 80-gallon overflow tank. Even stronger, and my overflow doesn't hold as much water. For the price and quality I will be ordering more for my other tank systems. With the money saved you can invest in other products for your aquarium. Basically a good pump. Why waste money on something that just pumps water back into your reservoir.
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