diy overflow

[Rhykiru]

hehe, i have one but im so iffy right now. The pump i am going to get is going to be about 550gph+ and my sump for my 75 gallon tank is only 10 gallons big. Not forgetting that the place for my biomedia is a small 8x10 steralite thingie. Lets hope it can handle this >.>

 

[LazyGrumpyFish]

good luck and you will love them
get real inventive and build a background in your tank like mine and you won't ever see them

haha, I need to take baby steps before I start doing crazier stuff to my tank. The idea for me behind this overflow is so I don't have to glue anything to the tank in case I want to sell it in the future... and I think store-bought filters are boring and overpriced.

Would you guys mind judging my design if I draw it out, even after reading all these posts I'm still not sure what the optimal configuration is for about 700 gph. I'll try finishing the drawing tonight and then post it on here.

 

[nolapete]

700 gph would require either 1 1-1/4" overflow or 2 1" overflows. I don't understand why people keep trying to change the design. There's no reason to change it. It works.

 

[Rhykiru]

oh ok, thanks nolapete ^^

Hm, some guy at my dads work gave him a pump. I dont see any rating on it but it runs fine. Cant wait till i can use the pump and the overflow together :3

 

[matthew112687]

Thanks for this thread everyone, Im planning on doing this to my 90 gallon and every question I had was answered here. The pictures throughout the thread helped me alot, so here are a few more, for anyone that may need it.

This is just in the bath tub and 1/2" pipe. I am planning on using 2, 1" overflows for my 90 gallon since my pump will be returning 688 GPH after headloss.

 

[eh1421]

hehe, i have one but im so iffy right now. The pump i am going to get is going to be about 550gph+ and my sump for my 75 gallon tank is only 10 gallons big. Not forgetting that the place for my biomedia is a small 8x10 steralite thingie. Lets hope it can handle this >.>

should be fine
that is exactly how my 75 gal is set up

mike

 

[coolkeith]

I copied the basic design from this thread, then kicked it up a few notches.
Pic's of my 1.5" duel inlet overflow-

The lever valve was leaking air, so I took it off, patched up the hole, and put a put a different valve in.

This duel inlet idea came from Tinman at LOL. This is absolutely quiet. I don't hear any noise from it at all. The return pump is a RIO Plus 2100 rated for 672 gph.

I tried using a check valve, but it wouldn't work well connected to a venturi intake, so I just used an airline tee instead. The tee is the only thing I could find that fit the hole for the check valve.

This is the airline going to the venturi intake. This primes the overflow and keeps it primed. The vent just needs to be filled with some water to get it started.

The other line is going to the vent and is submerged in the water. This serves no purpose that I know of. Pulling it out is an easy way to break the siphon if I need to.

 

[Rhykiru]

why did you make the tee so high?

when i read the thread, i think somewhere it says that the lower then tee, the more suction power there is as long as the tee is not below the "u" in the tank.

 

[coolkeith]

The tee is as low as I could put it. The overflow goes from my main tanks to a 190g paludarium sump.

 

[zdoo2]

hey, so divised a more hidden plan for an overflow using the same ideas as the pipe overflow just a little more concealed, it uses 2 small one of these --> http://image.bizrate.com/resize?sq=160&uid=355710511&mid=121361 or something a bit smaller and thinner, some pvc pipes and a few little pieces of acrylic. using 1" pipe to push 1200 gph total, one will pull water from surface the other from deeper in the aqaurium, will it drain 1200gph using 2 1" pipes? (there are also 2 pipes going to sump... pipes are the blue things), one box will hang in aqaurium and one outside

black dots are holes, i could prolly just make the boxes out of acrylic

i will post pics soon if it works