Who has 1.25" returns into their tank?

[Titleist]

I thought I had the return pumps nailed down for my build but I got info from CV that there may be a problem with too much back pressure running a varios 8 into 3/4" locline inside the tank.

So if I can't run 1.25 all the way up and connect it to locline inside the tank how is anyone here getting the return into the tank any larger than 3/4"?

I just wonder how could anyone use this pump as a return pump with locline if you can't connected it to locline because it's too restrictive?

 

[CC13]

I thought I had the return pumps nailed down for my build but I got info from CV that there may be a problem with too much back pressure running a varios 8 into 3/4" locline inside the tank.

So if I can't run 1.25 all the way up and connect it to locline inside the tank how is anyone here getting the return into the tank any larger than 3/4"?

I just wonder how could anyone use this pump as a return pump with locline if you can't connected it to locline because it's too restrictive?

I run 1.5" return from my pump to lockline in my tank. I have six locline (three per each side of my tank), and the pressure seems to be just fine.

I have two gate valves on each side of the tank so I am able to adjust the flow if needed.

 

[davocean]

What size tank is this and how much flow are you trying to push?

Many of us only push about 5x turnover on returns, and usually your drain size determines how much flow it can actually handle.

 

[Titleist]

It's an 84x24 tank. It's custom aquatics, using their siphon stoppers and locline. I asked about s80 bulheads etc. they advised it's not necessary. Their outputs are locline too, so if I can't get it any larger I can't see how anyone can get a larger diameter output into their actual tank and be able to direct it anywhere. If locline doesn't go higher than 3/4" I'd just have to have an open hole at the back of the tank.

I can't imagine that everyone who runs a varios 8 pump has larger output than 3/4". If I hadn't found a review on BRS about this pump and CV's response to their issue about plumbing I would have just set it up and ran with it. I just don't wanna spend 800 bucks on 2 pumps that start whining or otherwise break and I have no warranty because my plumbing is said to be the cause. I sent my concerns back to CV and I'm hanging on for a reply but the first reply was that locline may put too much pressure on the pump.

To get over 2000gph actually out of the outputs without getting a second mortgage on my house is the goal here as I'm setting it up Triton from the start. Also, if I actually did take the hit and spend the same or double the amount on an abyss who knows whether I'd get a similar warranty reply about plumbing.

This is way more problems than it should be I think.

 

[ca1ore]

Just bag the loc line - it's mostly useless anyhow.

 

[Titleist]

So if I have them drill for a 1.25" s80 bulkhead, what's on the other side to direct flow? Or do you just leave an open bulkhead?

At 2kgph I'd think I should direct it towards the center of the tank yes?

 

[ca1ore]

Just use a couple of bits of PVC - probably a 45 degree and a bit of pipe.

 

[justingraham]

I ran 1 1/4 lines to one inch flow monitors to 3/4 lines into my sea swirl output on two different pumps

The Cor hums the Vectra does not

Excuse the mess adding a frag tank

 

[Titleist]

no word back from coralvue on this. Has anyone done an expense to value review of DC pumps? Seems as return pumps they're not worth much in a reef unless you're blowing straight pipes into a tank on level ground. Other than that, to get any connectivity or finer control over flow you have to spend more on the pump than your tank. And to use higher flow AC pumps and throttle them is a waste of electricity.

This is having an effect on how the sump is configured as well. I may just have the sump designed for dual 1.5" in a worst case scenario and close off or step down out of the bulkhead depending on which way happens with pumps.

 

[ca1ore]

Has anyone done an expense to value review of DC pumps? Seems as return pumps they're not worth much in a reef unless you're blowing straight pipes into a tank on level ground.

Probably a bit of an exaggeration, but it's part of the 'lie' of DC pumps. There are exceptions, but most are designed as flow rather than pressure pumps. By the time you account for the actual flow loss, the expected energy savings go poof - or at least part does.

 

[Reefer Miles]

I am running into the same issue. I will be running 2 COR-15s. Neptune recommends 1.25” return lines. Loc-line is no larger than 3/4”.

Best solution I have found so far is VCA makes a 1” loc-line similar product. Unless I can find a solution to maintain 1.25” the whole way, I plan to reduce into the 1” VCA loc-line into 1” random flow generator nozzle.

Hope this helps. Let me know if you come up with a 1.25” solution.