Water Pump for Sump/Veggie Filter

Hello! I am getting a water pump for my sump/veggie filter. The idea is that the pump will pump water from a tube and into the sump, so the pump will be inside the sump. I am new to this and I don't really know how the pump work. Will the water pump pump water from the tube and out the slits on the side or is it the other way around? The pump I want to get is this:
Is that how it work? If not, are there any water pump with reversible flows that is cheap and small? My sump is not that big so the size really matters. The flow rate have to be at least 320 gph, preferably with adjustable flow. I tried looking up for it but I can't find it . Thanks, help is appreciated!

 

The tube portion is the outlet, the grated area the inlet.

 

So you mean that the pump suck water from the grid and out the tube? Are there any pumps that suck water from the tube and out the grid?

 

Not that I've seen, no.

 

Awww, that's too bad. It would look ugly with the water pump inside the tank. How do you people with sumps and veggie filters manage?

 

Search in youtube how aquarium overflows work. The pump's job is to put water back into the display tank. The overflow inside the display tank is what brings water to the sump or refugium (or what you call veggie filter). Meaning, excess water in the display tank brought by the pump from the sump "overflows" back into the sump.

 

Ok, I just checked how it work and I decided that it might be a little too risky. If the siphon break for some reason, I'll be pumping all my sump water onto my beautiful wood floor. I'll rather put the pump inside the tank and pump water into the sump and let access water flow into the tank like a HOB filter. Still, I would prefer having the pump inside the sump. Any ideas?

 

I think all sumps have the pump inside of it. If done right you can have a flood proof system. My pump can stop working, my overflow can stop working and still there would be no flood.

Found this video that can help you understand how it works.

 

I think all sumps have the pump inside of it. If done right you can have a flood proof system. My pump can stop working, my overflow can stop working and still there would be no flood.

Found this video that can help you understand how it works.

I know, I am not talking about the pump not working, I am talking about the siphon not working.

 

I see. I have yet to see my overflow to stop working due to a very big air bubble. This happens when the pump is weakening and not giving enough velocity within the tube to push the bubbles out. My only concern was that if a visitor haphazardly pulls the U tube out (maybe out of curiosity) and stops the siphon.

My solution is a level controller that I made that turns off the pump before a spill could happen. A float switch in the aquarium turns off the pump if a spill is about to happen. Another switch turns off the pump if the level gets too low in the sump. Check out my blog and don't forget to read my detailed comments. You don't have to make one, you can buy a cheap $50 one that I linked and find some way to hang the switches. I used insulated steel wire.

 

Sorry, I am not good with technology. I want to stick with the simple designs.