Return pump for 125 reef

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simbarocks43

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HI I'm in the middle off a build but don't know what pump would be good to use on a single overflow to run two eductors as returns and also run three reactors and maybe a chiller external or internal pump what gallon rating would I be looking at. Thank you
 
Avast
It would depend on the distance (both vertical and horizontal) from your DT to your sump. Would also need to know what your overflow is rated at.
 
Like waters said a lot of variables. Most try for 7 to 10 times tank volume. I run about 800 through mine as far as reactors I run separate pumps for those.
 
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+1 to above. Just need to know a little more detail about what you are trying to do; what are you running in the reactors and how big/what brand? All have different recommended flow rates. E.g., biopellets need to be run at a specific flowrate dependent on the reactor. Also pricing is a big decision as is controllers if you are using one and want to connect your return pump to a controller, or if you will in the future. Either way, I'd recommend a DC pump, and get one size larger than what you actually think you need, so you can dial it up and down, and in the future, dial it up if the pump output starts to degrade. I like running everything I have off one pump and love the flexibility of a DC pump. Look at Ecotech Vectra if you don't mind dropping the cash, Jebao if you want cheap. I have a Jebao/Jecod return and it's super quiet and powerful. Love it. Also connects to Apex and Vectra won't, but the Vectra may be better, I don't know. Looks cooler... ;)
 
Will be using biotek marine media reactors and will be using one inch line but will use gate valves to tune flown into sump to reactors and dt not sure on flow rate into sump there will be about 4 feet off line 3 ft horizontal and 18 inch vertical
 
Idk I'm not sure this is my first big tank I'm new to saltwater mainly kept planted tanks should I go for 3/4 as return
 
you don't need to worry as much about the pressure or velocity through the return, mostly the flowrate and turnover through your DT. Some people advocate 5X through DT while other higher, up to 10X through DT and sump, so you can probably go with those. I tend towards the higher range of that, but either way you'll be fine. I would start by choosing a flowrate through the DT and sump (also take into account your skimmer and what it's rate will be, try to keep them somewhat close, or just get a skimmer with a good flowrate), then adding up what you need for your reactors, then look at some DC return pumps. Choose one that can provide the total flow you need with the added head pressure of 18", plus some loss running through 90 degree connectors, or get 45's for less loss. I.e., if you need a total of 1500 gph flowrate, find a return pump that can do that at 18" of head, or get a higher rated DC pump that you can dial down electronically... Does that help? For your tank with a DT turnover of 10X, e.g., DT needs 1250 gph, each reactor needs 200 gph, so you need 1850 gph at a head loss of 2 ft give or take, so look for something that does that, or halve the amount flowing into the DT and you need 1225 gph return pump that can do that at a head of 2 ft, or 1.5 m or so, rounded...
 
Avast
f.lloyd.taylor said:
you don't need to worry as much about the pressure or velocity through the return, mostly the flowrate and turnover through your DT. Some people advocate 5X through DT while other higher, up to 10X through DT and sump, so you can probably go with those. I tend towards the higher range of that, but either way you'll be fine. I would start by choosing a flowrate through the DT and sump (also take into account your skimmer and what it's rate will be, try to keep them somewhat close, or just get a skimmer with a good flowrate), then adding up what you need for your reactors, then look at some DC return pumps. Choose one that can provide the total flow you need with the added head pressure of 18", plus some loss running through 90 degree connectors, or get 45's for less loss. I.e., if you need a total of 1500 gph flowrate, find a return pump that can do that at 18" of head, or get a higher rated DC pump that you can dial down electronically... Does that help? For your tank with a DT turnover of 10X, e.g., DT needs 1250 gph, each reactor needs 200 gph, so you need 1850 gph at a head loss of 2 ft give or take, so look for something that does that, or halve the amount flowing into the DT and you need 1225 gph return pump that can do that at a head of 2 ft, or 1.5 m or so, rounded...
Click to expand...
Thank you I found a DC pump with 2100 gph and 16' off head
 
nice!!!! DC with 2100 gph at 16' of head will give you a lot of flow. I'd recommend starting the flow at half of what it can do, then dial it up to what you need. Awesome man! Great pump to get, hope it works out great for you!
 
f.lloyd.taylor said:
nice!!!! DC with 2100 gph at 16' of head will give you a lot of flow. I'd recommend starting the flow at half of what it can do, then dial it up to what you need. Awesome man! Great pump to get, hope it works out great for you!
Click to expand...
Thank you, you were really help full will start a build thread in a month
 
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Glad to help out man! One more piece of advice that'll help you out. When you plumb your return line, whether it's 1" or 3/4", doesn't matter really. 90 degree elbows will reduce the flow somewhat. Try to use two 45 degree connectors on the return line. Here's two guys who have great build threads and tanks: @Diesel @143MPCo
Look at what they did for returns and you'll see some good plumbing.
BTW, do you know what your overflow is rated for?
 
What kind of pump did you end up getting? I will have a 120gal with sump in the basement and need to get my water up 13+ feet.
 
f.lloyd.taylor said:
Glad to help out man! One more piece of advice that'll help you out. When you plumb your return line, whether it's 1" or 3/4", doesn't matter really. 90 degree elbows will reduce the flow somewhat. Try to use two 45 degree connectors on the return line. Here's two guys who have great build threads and tanks: @Diesel @143MPCo
Look at what they did for returns and you'll see some good plumbing.
BTW, do you know what your overflow is rated for?
Click to expand...
Might go with a synergy overflow 1500 gph from brs
 
Nutramar Foods
That's the same return pump I am using....Jecod DCT-8000
Have a 125 with two overflow returns
I use two of them running at 80 % ...max overflow...can do 90%, but 100% will overflow the returns.
been in use now about a year, running quite and strong.

I think my flow is somewhere around 3 to 4000 gallons per hour....not sure on that?
 
AS
Mark3 said:
That's the same return pump I am using....Jecod DCT-8000
Have a 125 with two overflow returns
I use two of them running at 80 % ...max overflow...can do 90%, but 100% will overflow the returns.
been in use now about a year, running quite and strong.

I think my flow is somewhere around 3 to 4000 gallons per hour....not sure on that?
Click to expand...
Thanks was worried on how it would function planning on running reactors off it maybe algea scrubber or uveitis sterilizer or chiller
 
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