quick plumbing question

[nbelohlav]

is a 1" return attached to a mag 9.5 too much for a 75 gallon tank?

 

[sedor]

Personally, yes, but you can always control the flow with a ball valve. You could run a manifold off of the return and power a skimmer, reactors etc as well.

 

[nbelohlav]

so as long as i tune it down some via a gate valve i will be fine and it will leave some play for adding on later... thats good. i can move forward with the plan then thank you

 

[r-balljunkie]

1 1/2" minimum. 1" too restrictive...you'll get 600 gph thru 1 1/2" comfortably.

 

[bongarone]

1 1/2" minimum. 1" too restrictive...you'll get 600 gph thru 1 1/2" comfortably.

For a 75 gallon tank, a single 1" is fine. He doesn't need 600 gph through the sump.

 

[r-balljunkie]

.......attached to a mag 9.5

mag 9.5 = 950 GPH, no losses

1" pipe minimum = 600 GPH, per RC calculator
http://www.reefcentral.com/index.php/drainoverflow-size-calc


in reality you'll get 500 GPH thru before surging/gurgling occurs.
anything is possible, but the above is not optimal.

 

[thor109]

I ran a mag 3 on my 75 until I added a seperate fuge. 4 to 6 times tank volume is what's needed.

 

[nbelohlav]

For a 75 gallon tank, a single 1" is fine. He doesn't need 600 gph through the sump.

what would be a good GPH flow through the sump? i am going to be running an algae turf scrubber as well but on its own smaller pump. also im not going to do any damage to my map pump if i am running it on a 1" return line am i?

 

[bongarone]

what would be a good GPH flow through the sump? i am going to be running an algae turf scrubber as well but on its own smaller pump. also im not going to do any damage to my map pump if i am running it on a 1" return line am i?

Your return GPH should be equal to the GPH of your skimmer.

I have a 110 gallon with a Mag 9.5 and 1.5" return piping and it's plenty. That's why I say the same pump with 1" plumbing would be fine for your 75 gallon.

And no, you will not damage your Mag pump. In fact, your pump will draw less power with a lower flow rate.

 

[nbelohlav]

Your return GPH should be equal to the GPH of your skimmer.

I have a 110 gallon with a Mag 9.5 and 1.5" return piping and it's plenty. That's why I say the same pump with 1" plumbing would be fine for your 75 gallon.

And no, you will not damage your Mag pump. In fact, your pump will draw less power with a lower flow rate.

ok, i am going to be running the vertex IN100 that i got used so i dont know the GPH it is rated for off hand but i want to say its like 420 liters an hour or something like that...

 

[r-balljunkie]

Your return GPH should be equal to the GPH of your skimmer.

Skimmers are rated in LPH, or SCFM.....how much air volume or intake the pump can draw and not water volume (notwithstanding manufacturers ratings/guidelines which can be taken with a grain of salt).



There's no correlation between the two. Whether you have a low or a high turnover thru your fuge is up to you.

I have a 110 gallon with a Mag 9.5 and 1.5" return piping and it's plenty. That's why I say the same pump with 1" plumbing would be fine for your 75 gallon.

what does tank size have to do with how much water flows thru a pipe?

This isnt a scalable guess based off metrics, its a calculation.

If you have a 10 gallon tank with a 1" overflow pipe, it will push thru the exact same volume as a 1000 gallon tank with a 1" overflow pipe if they're the same height.

If you are setting up an ATS, you should consider tee'ing off the supply line. Always try to eliminate add'l equipment where you can.
Good luck.

C

 

[TimeConsumer]

My Mag 9 on my 75g is plumbed with 1" pvc and 1" ID vinyl tubing. I have it tee'd off to my refugium and throttled back with a ball valve. I throttle it to about 300gph turnover between sump and display. Works like a charm for me.

 

[nbelohlav]

My Mag 9 on my 75g is plumbed with 1" pvc and 1" ID vinyl tubing. I have it tee'd off to my refugium and throttled back with a ball valve. I throttle it to about 300gph turnover between sump and display. Works like a charm for me.

think that you could post me a pic of your setup? also where can i find the proper fitting to attach to the output on the mag 9.5 to go from 3/4 to 1"? d

 

[nbelohlav]

Skimmers are rated in LPH, or SCFM.....how much air volume or intake the pump can draw and not water volume (notwithstanding manufacturers ratings/guidelines which can be taken with a grain of salt).



There's no correlation between the two. Whether you have a low or a high turnover thru your fuge is up to you.



what does tank size have to do with how much water flows thru a pipe?

This isnt a scalable guess based off metrics, its a calculation.

If you have a 10 gallon tank with a 1" overflow pipe, it will push thru the exact same volume as a 1000 gallon tank with a 1" overflow pipe if they're the same height.

If you are setting up an ATS, you should consider tee'ing off the supply line. Always try to eliminate add'l equipment where you can.
Good luck.

C

do you mean tee'ing off the overflow pipe? if so i was told not to in a different thread as doing it that way is harder to tune, it was my original plan to do that till i was told how hard it is to get the GPH correct.