Separate Overflow for Closed Loop

[jdarr]

Another option to consider is copying David Saxby's closed loop. This is what I would do if I was doing this over and especially with a larger tank. He uses dedicated pumps that turn on and off with a timer. The new DC pumps would work great for this purpose with their slow ramp up even through his are AC pumps and seem to work flawlessly.

http://www.theaquariumsolution.com/files/Technical review of David Saxbys system2.pdf

Hey Chris, do you know how many starts the DC pumps have in a lifetime? I love the idea, but wonder how many times you could soft start those pumps? I visited David's tank a while back and his set up was pretty impressive for sure... but the price tag of the abyzz pumps he's using made my knees buckle :lmao:

 

[ReefKeeper64]

Hey Chris, do you know how many starts the DC pumps have in a lifetime? I love the idea, but wonder how many times you could soft start those pumps? I visited David's tank a while back and his set up was pretty impressive for sure... but the price tag of the abyzz pumps he's using made my knees buckle :lmao:

I listened to a video iof David Saxby and he was asked that same question about his pumps. That is, if he had any maintenance issues caused by stopping and starting his pumps so often. He said his pumps have been running that way for several years and have never been a problem. A pump doesn't experience any undue stress or wear when being started. They will run cooler this way as well.

Be sure to check out the new Diablo DC-5500 slow ramp up pumps. Salty -- supply -- ...com sells them and they are in stock but you can find them at a few other places in stock now as well. I just ordered myself one for $219 shipped for another use. This is 1400gph external pump and it is a winner in my book so I'd use two of them for a CL in a minute and skip the OM-4 way all together. The fewer moving parts, the better.:bounce3:

 

[jdarr]

I listened to a video iof David Saxby and he was asked that same question about his pumps. That is, if he had any maintenance issues caused by stopping and starting his pumps so often. He said his pumps have been running that way for several years and have never been a problem. A pump doesn't experience any undue stress or wear when being started. They will run cooler this way as well.

Be sure to check out the new Diablo DC-5500 slow ramp up pumps. Salty -- supply -- ...com sells them and they are in stock but you can find them at a few other places in stock now as well. I just ordered myself one for $219 shipped for another use. This is 1400gph external pump and it is a winner in my book so I'd use two of them for a CL in a minute and skip the OM-4 way all together. The fewer moving parts, the better.:bounce3:

Awesome thanks for the info. I'll look into this... So, to be clear, I could use any controller (like a profilux) to turn them off and on, and would not need
any other means of controlling them? So would you suggest just plumbing 2 of them into the tank and alternating flow patterns? Or do the controllers provided do this for you?

 

[ReefKeeper64]

Awesome thanks for the info. I'll look into this... So, to be clear, I could use any controller (like a profilux) to turn them off and on, and would not need
any other means of controlling them? So would you suggest just plumbing 2 of them into the tank and alternating flow patterns? Or do the controllers provided do this for you?

A Profilux will work perfectly with what you want to do. Just plug each pump into a separate controlled outlet and you are good to go. With a controller, you'll even be able to create more true randomization throughout the day than the monotonous 1rpm pattern my OM 4-way makes. And with the money you save on the OM-4 way, you can get a controller for next to nothing and get all those additional benefits that a controller provides for free.

 

[Mudbeaver]

WOW ok man i'm in the process of building my system too. I'm aiming for a herbie too and a closed loop but. This is the difference. i only have 6 holes in my tank.

The herbie towers the bottom closed

The closed loop acceleration sculptures(2) with only two holes

My last accelleration sculptures the next one will be smaller

 

[Mudbeaver]

Is your tank done yet is it drilled yet. If not you may want to rethink over drilling it.

 

[jh2pizza]

I had my closed loop one my 180 with the intake in an overflow. Huge mistake. I hated it. Absolutely hated it to the point of shutting it down.

Micro bubbles everywhere, all the time.

 

[Timber77]

ive had the full blown om 4 way with revolutions in the 90s on big amp master pumps it works but its an awful lot of pluming and the bulkheads and valves are not free, any air holes make micro bubbles.... on bigger setups a simple couple outlets of closed loop to get a swirl pattern might be a good idea to keep the dust from settling so to say, but would still go the mp40 wp 40 tunze type route for waves and random flow, my tank side walls and back are black acrylic so the pumps dont really stick out too bad to my eyes. Its another case of more than one way to skin the cat.