topofsteel
Member
I've ordered a tank 125G tank with one 1" diameter drain hole and one 3/4" return hole. What GHP will i be limited too? I wish I had thought of this before.
Thanks.
Thanks.
Hole diameter / GPH
- Thread starter topofsteel
- Start date
fender
Active Member
Maximum Achievable Flow in GPH / Minimum Inside Diameter of Pipe
300 GPH1/2”
720 GPH3/4”
1,200 GPH1”
1,,600 GPH1 -1/4”
2,600 GPH1 -1/2”
4,800 GPH2”
6,000 GPH2 -1/2”
Make sure that you are getting the holes cut to the size of the bulkhead fitting not the pipe size. For example a 1 inch pipe needs about a 1 3/4 inch hole. A 3/4 inch pipe needs a 1 3/8"- 1 1/2" hole.
300 GPH1/2”
720 GPH3/4”
1,200 GPH1”
1,,600 GPH1 -1/4”
2,600 GPH1 -1/2”
4,800 GPH2”
6,000 GPH2 -1/2”
Make sure that you are getting the holes cut to the size of the bulkhead fitting not the pipe size. For example a 1 inch pipe needs about a 1 3/4 inch hole. A 3/4 inch pipe needs a 1 3/8"- 1 1/2" hole.
bojik
Member
Originally Posted by fender
Maximum Achievable Flow in GPH / Minimum Inside Diameter of Pipe
300 GPH1/2”
720 GPH3/4”
1,200 GPH1”
1,,600 GPH1 -1/4”
2,600 GPH1 -1/2”
4,800 GPH2”
6,000 GPH2 -1/2”
Make sure that you are getting the holes cut to the size of the bulkhead fitting not the pipe size. For example a 1 inch pipe needs about a 1 3/4 inch hole. A 3/4 inch pipe needs a 1 3/8"- 1 1/2" hole.
Those gph figures base level before fittings etc on pump (powered flow) or gravity flow?
Maximum Achievable Flow in GPH / Minimum Inside Diameter of Pipe
300 GPH1/2”
720 GPH3/4”
1,200 GPH1”
1,,600 GPH1 -1/4”
2,600 GPH1 -1/2”
4,800 GPH2”
6,000 GPH2 -1/2”
Make sure that you are getting the holes cut to the size of the bulkhead fitting not the pipe size. For example a 1 inch pipe needs about a 1 3/4 inch hole. A 3/4 inch pipe needs a 1 3/8"- 1 1/2" hole.
Those gph figures base level before fittings etc on pump (powered flow) or gravity flow?
fender
Active Member
I couldn't determine what pressure that was at .
I did find this from another source:
Maximum Recommended Flow Rates For PVC Pipe
Pipe Size Gallons Per Hour (GPH) Gallons Per Minute (GPM)
1/2" 480 8
3/4" 900 15
1" 1,500 25
1 1/4" 2,700 45
1 1/2" 3,600 60
2" 5,400 90
3" 13,500 225
4" 21,000 350
6" 42,000 700
Again no pressure numbers.
You can push 12000 GPH through 1/2 pipe at 221fps but it would be lethal
It is hard to tell how much a pipe will flow without knowing the pressue behind it.
EDIT: Nope. From another source the first chart is under typical pump pressure (whatever that is). Gravity flow will be approx 1/2 that. I.e. a 1 inch pipe will drain ~600gph.
I did find this from another source:
Maximum Recommended Flow Rates For PVC Pipe
Pipe Size Gallons Per Hour (GPH) Gallons Per Minute (GPM)
1/2" 480 8
3/4" 900 15
1" 1,500 25
1 1/4" 2,700 45
1 1/2" 3,600 60
2" 5,400 90
3" 13,500 225
4" 21,000 350
6" 42,000 700
Again no pressure numbers.
You can push 12000 GPH through 1/2 pipe at 221fps but it would be lethal
It is hard to tell how much a pipe will flow without knowing the pressue behind it.
EDIT: Nope. From another source the first chart is under typical pump pressure (whatever that is). Gravity flow will be approx 1/2 that. I.e. a 1 inch pipe will drain ~600gph.
topofsteel
Member
OK, based on the information on this thread I quickly called the Tank manufacturer and added two more of each hole sizes. So now I have (2) 1"D and (2) 3/4"D holes, double of what I was originally going to have. If i am reading this right one of my main limitations in GPH is drainage. I'm at 1200GPH (+/-) so I plan to get a pump that can move at least that and use a ball valve to limit and adjust the flow to the tank.
However 1200GPH is still less that the recommended flow for my tank size, a 125T. I'm planing a FOWLR to start, shortly after ad a Fuguium (sp) and eventually upgrade my lights and get into corals. Is anyone else using a similar setup? And how have your results been? Thanks.
However 1200GPH is still less that the recommended flow for my tank size, a 125T. I'm planing a FOWLR to start, shortly after ad a Fuguium (sp) and eventually upgrade my lights and get into corals. Is anyone else using a similar setup? And how have your results been? Thanks.
bojik
Member
Originally Posted by topofsteel
OK, based on the information on this thread I quickly called the Tank manufacturer and added two more of each hole sizes. So now I have (2) 1"D and (2) 3/4"D holes, double of what I was originally going to have. If i am reading this right one of my main limitations in GPH is drainage. I'm at 1200GPH (+/-) so I plan to get a pump that can move at least that and use a ball valve to limit and adjust the flow to the tank.
However 1200GPH is still less that the recommended flow for my tank size, a 125T. I'm planing a FOWLR to start, shortly after ad a Fuguium (sp) and eventually upgrade my lights and get into corals. Is anyone else using a similar setup? And how have your results been? Thanks.
Take into account you can always add a closed loop system for more flow.
OK, based on the information on this thread I quickly called the Tank manufacturer and added two more of each hole sizes. So now I have (2) 1"D and (2) 3/4"D holes, double of what I was originally going to have. If i am reading this right one of my main limitations in GPH is drainage. I'm at 1200GPH (+/-) so I plan to get a pump that can move at least that and use a ball valve to limit and adjust the flow to the tank.
However 1200GPH is still less that the recommended flow for my tank size, a 125T. I'm planing a FOWLR to start, shortly after ad a Fuguium (sp) and eventually upgrade my lights and get into corals. Is anyone else using a similar setup? And how have your results been? Thanks.
Take into account you can always add a closed loop system for more flow.