couple ?'s about the DIY overflows.. PLEASE HELP

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haze

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Jan 28, 2009
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ummm... ok!!
i have never used a sump.. ive read alot the last few months but dont understand everything fully yet with the DIY overflow. and if im not mistaken the DIY overflows will help keep water flooding on the floor incase of a power outage right? i have a couple questions

i am going to make a DIY overflow

my tanks dimensions are 60L x 32W x 19H

my sumps dimensions are 30L x 12W x 16H (it is ESHOPPS model WD-200CS) just going to use bioballs

my pump is a VIAAQUA model VA-4900

1. will 1 overflow be enough?
the sump has the 2 inlets will i need 2 overflows 1 to each inlet?

2. What size piping will i need for these overflows? i want to put dual inlets on them IF possible.

3. will i need to install a valve to adjust flow? if so where should i put it?

4. with the bioballs can i fill the space up completely with bioballs like i have in the pic or do i need to leave alitle space between bottom of drip pan and top of balls?

5. when the sump is running how much water do i fill up with just below the balls? or do i submerge some of them in the water also?

i would really appreciate any help

THANKS

eshopps.jpg
 
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my pump is a VIAAQUA model VA-4900
you need to provide the flow chart for the pump with the appropriate head

1. will 1 overflow be enough? yes
the sump has the 2 inlets will i need 2 overflows 1 to each inlet? no but it is safer to rum to overflows

2. What size piping will i need for these overflows? i want to put dual inlets on them IF possible. fist we need to kno the flow from your pump

3. will i need to install a valve to adjust flow? if so where should i put it?
if we fiqure out your flow from thr pump and build appropriate over flows then no. but i do likr to hsve a valve to shut off the flow to the sump

4. with the bioballs can i fill the space up completely with bioballs like i have in the pic or do i need to leave alitle space between bottom of drip pan and top of balls?

5. when the sump is running how much water do i fill up with just below the balls? or do i submerge some of them in the water also?i would fill em up unless tou need the space for heaters or other media

theres a couplt of stickys that will help you find the right size over flows
but fist lets see that graph on your pump
 
here is a link to a site with the flowcharrt http://www.marinedepot.com/ps_AquariumPage~PageAlias~powerheads_pumps_viaaqua.html

OR HERE IS ANOTHER CHART TOWARD THE BOTTOM OF PAGE AOT MORE CLEARER
http://www.graystonecreations.com/riotable.htm

it says:
MAX HEAD 14FT
MAX FLOW 1321GPH


the input and output are 1"

and for the heater im using renasmart heaters and where they are at in the tank is fine i would like to move them in the sump ONLY TO GET THEM OUTTA SIGHT but its not neeeeeded! so are u saying to remove the egg crate the balls rest on and just fill that whole area up with them?

powerhead_via_aqua_graph.jpg
 
ttt
 
so i just hooked up the overflow box to see how it does it has two 1" holes in it to drain to the sump, and i was only able to to open the valve for the return off the pump about a 1/4 of the way to keep the overflow and pump running the same.

the output water pressure SUCKED it was very weak BUT if i open the valve anymore it drains the sump before it can fill from the overflow box..

when i make the DIY overflows will 1 1/4" PVC be enough to flow into the WET/DRY sump better so i can open the return valve more?

I WANT TO RUN THIS SUMP AT ITS MAX..
 
ok so a 1 inch overflow should drain 600 gph, 2 should do 1200 gph
nowif your tank has 4 ' head then ur pump should pump about 1 gph an hour, so you should be fine but your not
so is there enough water in ur tank?
you could try raising the water level
is there any restrictions on your drains?
theres a sticky on pipe sizing and flow rates i would check that out,
also i wouldn't restrict your out put on your pump, it will decrease your pumps life
what you could do is but a tee in line to redirect some water back to your sump, that should work, let us know how it goes

'size _GPM __GPH' posted by chompers
1/2 = 2.50 = 150
3/4 = 5.63 = 337.5
1.0 = 10.0 = 600
1.25=15.6 = 937.5
1.5 = 22.5 = 1350
2.0 = 40.0 = 2400
 
ozpkchris ,
ok so a 1 inch overflow should drain 600 gph, 2 should do 1200 gph
nowif your tank has 4 ' head then ur pump should pump about 1 gph an hour, so you should be fine but your not
so is there enough water in ur tank? there is about 5' head and the water level in the tank is filled all the way up and the water level in the sump i filled to just under the bioballs.
you could try raising the water level
is there any restrictions on your drains? there are no restrictions on the drains 2 pipes 1 running to each inlet on the drip pan.
theres a sticky on pipe sizing and flow rates i would check that out,
also i wouldn't restrict your out put on your pump, it will decrease your pumps life
what you could do is but a tee in line to redirect some water back to your sump, that should work, let us know how it goes i was reading about that ill do that instead. will it be ok to drill another hole in the drip pan lid to run this xtra hose? does the hose coming of the TEE need to be the same size 1" diameter?
 
i will set it all back up this afternoon and take pics..
 
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