returns

[NYreefNoob]

ok getting ready to set-up new rr tank. i think the drain is 2" and 1 1/2 return. bottom of tank and sump will only be about 2' i have a mag 9.5 for return 1 3/4 flap style check valve. want to know if this pump will be big enough. and if so anyone know where i can get the nylon screws ? on my return pipe covering out over the overflow i would put a elbow so it sprays 2 directions, at a close ratio. for a nice top flow. opinions ? the overflow is a box in the middle. will get pic's to show. ty rick

 

[duke62]

i bought my nylon screws at loews

 

[Deanos]

ok getting ready to set-up new rr tank. i think the drain is 2" and 1 1/2 return. bottom of tank and sump will only be about 2' i have a mag 9.5 for return 1 3/4 flap style check valve. want to know if this pump will be big enough. and if so anyone know where i can get the nylon screws ? on my return pipe covering out over the overflow i would put a elbow so it sprays 2 directions, at a close ratio. for a nice top flow. opinions ? the overflow is a box in the middle. will get pic's to show. ty rick

:help:

 

[Tonyscoots84]

dont use the check valve u will regret it.. i would also put a ball valve or a gate valve on the overflow and return plumbing so u can have complete control over the overflow and return... 2" sounds pretty big for an overflow(you know a mag 9.5 is about 950gph and a 2" drain is more then 1500 gph......)

who made the tank?

 

[pecan2phat]

2" sounds pretty big for an overflow

What about the 1.5" return :bigeyes:

 

[Tonyscoots84]

What about the 1.5" return :bigeyes:

yea that 2 :bigeyes:... i think he has the wrong sizes they dont seem right...

 

[crox99]

Yep I Think those measurements are way off unless he hase a 300g tank.

 

[grisha]

i found that a large drain actually more silent

 

[Tonyscoots84]

:help: :sigh:

 

[grisha]

tony wassup?

 

[Henrye]

Ahhh....I would agree with forgetting the check valve and going with a ball or gate valve instead. I've read too many horror stories on check valves that failed (in this case, I think reading about the failures beats having one to claim experience with). I do think you're pipe diameters' are off, so can you check again and see what you actually have set up for your overflow (and size of tank).

Henry

 

[NYreefNoob]

Overflow

ill measure again tonight, it is a custom built tank, and if anything i can reduce it on the drain to slow flow or put a ball valve to set rate. ill also get a picture tonight of it. and ty so far for the help

 

[PalmTree]

Are you maybe measuring the hole on the bottom of the tank in which the actual bulkhead goes into? Just a thought.

 

[simike]

and if anything i can reduce it on the drain to slow flow or put a ball valve to set rate.

you Never want to put any valve on the drain size , drain size is always better to have bigger.

what size tank, size sump,, etc give more info ....

 

[NYreefNoob]

ok i was measuring the hole, the drain is a 1 1\2 the return is 1" i was going the put the flag valve on the return and i am using ball valve's on return and drain to adjust flow. tank is 63g sump is 24g but only using about 16g of it

 

[pecan2phat]

Use this to calculate your overflow volume:
http://www.reefcentral.com/calc/sump.php

But I still use a quality check valve personally. Don't know why so many people dislike them. Just be sure you have the overflow volume in your sump 1st.

 

[PalmTree]

OK that makes sense. If you have a 2" hole for the drain you probably will fit a 1" bulkhead. The 1 1/2" hole for your return will probably be able to accomadate a 3/4" bulkhead. I'm just taking a guess. Check out www.savko.com and look under bulkheads. They will have a minimum sized hole next to the bulk heads that you select.