Sun Jvp Series Submersible Circulation Power Head Pump, 800 GPH, 4Piece

I zip tie these to rocks but the suction cup is useless

It's very quiet, you do hear the water movement but that's it.

I had spent quite a bit more money for a set of circulation power heads with controller only to have the inside metal encased sections that allow an exterior magnet to hold it rust out somehow. Contacted the manufacturer and they said to send pics and I did and that was the last time I heard from them. $165.00 waisted. They are out of southern California northern San Diego county.So I needed to replace them and didn't want to throw money away and so far I am pleasantly surprised with these. I have one in the tank now and will be putting at least one more in soon. Now these don't have the additional functions that the crap ones I have had but they move the water just fine.

OK so I bought these when I upgraded from my 75 to 125. Are used to pointed upfront to break the surface tension and two down below to get the debris off the substrate. It creates quite current in the tank which I thought would be too much for these guys at first but they are fine it also did get all the debris off the tank which is very nice as you can see from my pictures I keep the tank pretty clean and do not like debris at all so this is better environment for them and it is better for my family and friends to look at. This was a great deal on these fans and I would highly recommend them when we caveat is I would say that in order to purchase a four pack please have at least 125 gallon aquarium or use in multiple smaller aquariums as these are very powerful pumps.

Well I bought pumps from this company before, and they all suffer from one flaw. The inside front cover of the pump is designed that when impeller strikes it on every startup, it makes it spin in the correct direction. Now the last pump I bought from SunSun, were a dual pump system, that started running backwards too. The reason for this is that the plastic inside the cover breaks, and impeller does what wants then, since it's no longer being directed on rotation. I bought these pumps in the hopes company had corrected this problem, but no they have not.If it wasn't for Amazon accepting this return. I would be SOL.They work great and are powerful, and the price can't be beat, if it wasn't for this design flaw.

Flow! Only needed 2 for the tank! and saved the other 2 just incase but 4 for $40 bucks not bad Yo!Happy with em!

Great deal. Strong pumps great for breaking up surface tension as well as circulating the tank I have two set up in a 75 gallon does a great job.

These little things are amazing - so powerful. I thought I was going to need at lease two of these to circulate my tank properly but one was plenty strong and they (I started with two of four in a brand new tank) stick to the wall easily and firmly. When removing one I had to really work at the suction cup to get it to release which shows how firmly it attached. If I ever need to purchase submersible circulation pumps again I will be looking for this brand. Highly recommend if your tank is 40+ gallons.

The media could not be loaded.  Hasta ahora muy buen producto, silenciosas y con un excelente poder, me han dado muy buen funcionamiento, esperemos sigan así, en medio año actualizo las estrellas a 5 si es que siguen trabajando sin problema

Mueve suficientemente bien el agua el ruido es espantosamente insoportable. Pienso cambiarlos a la brevedad. Si tu pecera esta en tu habitacion no lo pongas posiblemente para un lugar mas abierto estaran bien.

Solo he utilizado uno, los demás son para la pecera que no está terminada.

Se despegan las ventosas continuamente convirtiendose en un dolor de cabeza, les falta adherencia y se caen continuamente

Arrived on time, with everything as listed. Instruction were easy to follow. Time will be the true test. Only 4 stars because only just received it.