DIY Overflow

My DYI overflow and showing what happens with a power outage. Feel free to ask about the design.

[@Red-uf4hr]

good idea. I really like that.

[@FreeSwimmer]

You can have the drain amount of water greater than the amount of water the return pump put back into main tank and it will always stabilize.. An overflow will only occur if the return pump sends more water back into tank than drain can keep up with. ( like a lost siphon after power comes back on ) Many years of buying and building sumps, along with much studying/and asking experienced sumpers taught me that. Your on a good track

[@mannbub]

Real nice looking one, I am kind of scared what if this looses the syphon.

[@Reeferz4129]

@dezadstorm Well, with the overflow I have, the only thing you can do is have adequate waterflow. My 20 has two koralias on it and that is pretty ample and do a good job to keep everything moving with the exception of one or two deadzones behind the rockwork. If you have proper water flow, good CUC, and a good skimmer debris shouldnt be a big issue. I haven't seen an overflow that collects at the bottom actually come to think of it.

[@GamerronTv]

well i guess my question is i see most videos of diy pvc with a gautiy u shape style coming up to the surface of the water... i like the one tube in look better but i guess you dont need a u style so what size pvc did you use and what outter diamater pipe is the slitted one i am starting a 75 gallon reef tank with a 20 long sump all help is appreciated thanx

[@tanaquil1983]

I am hoping you can help. I built this, followed all of the instructions, but I am loosing siphon. I have check and rechecked. Priming over and over. not sure what is going wrong.

[@Reeferz4129]

@dezadstorm maybe it is early in the morning and I havent had my coffee lol... but re-elaborate? I do not understand the question. Are you asking about the sump?

[@mikesgsx420]

I'm going to make one this week for a 55g saltwater

[@jermainezey]

what size is ur pump pumping water back to ur

[@Reeferz4129]

I believe it was a Maxi Jet 900. I ended up upgrading it to a 1200.

[@vegasreefer6730]

can you tell me how to make that over flow

[@Adiktus81]

How long is the small pvc inside the big pvc. I want to make mie but know how to do it could you help me?

[@o0OFeeNO0o]

you can remove the air line if you have the check valve bro

[@izimalta]

mine is stopping, do i have a leak? maybe air is coming in?

[@mafiantinocrown631]

Do u have vid on u do it?

[@o0OFeeNO0o]

once the water line drops underneath the slits on the overflow the siphon will stop draining and then when the power turns on, the pump will repump the excess water to refill the overflow which should then start back up

[@saptakundu7313]

Smiley J it is loosing the siphone everytime power went off and then back on.. Tried many ways please help

Can this style of overflow be enough for a 800 gph? I've been reading that it can not?

[@aerospot2]

I would assume given proper size plumbing, it should be able to.

[@teezy_s]

2" pipe with suited return pump would work fine for 800gph

[@justingoette4478]

What did you do that stops it from flooding in a power outage?

[@FreeSwimmer]

When the water level drops below slits it cannot alow anymore water into sump ( make sure there is ample space for that in sump ) When power returns it will pump water back out of sump into main tank and when reaching the DIY weir teeth it will flow back into sump.. Clockwork as long as drain is more water than return. If return is more it will overrun drains ability.. If drain is more it will only alow enough water into sump to meet the return pumps demand.. Physics

[@debo0215]

does anybody have instructions on how to build or the name of this style of overflow?

[@jamiedobie7066]

Check out king of diy. Joey urau

[@FreeSwimmer]

DIY

[@stephenchung]

The problem is when the siphon breaks

[@ginofoogle6944]

too finicky.. there are better designs.

[@themanfromvolantis]

Gino Foogle ....for example?

[@fabricioalexandre3935]

uma porcaria...