DIY Overflow

[farkwar]

I dont know why overflows dont have ports at the bottom.

 

Thats were all the detritus flows to. I guess ill find out why.

 

 

 

 

5

[Enchelycore808]

Most overflows won't hve ports at the bottom because if your standpipe is only friction fitted to your bulkhead or if it fails, or your return pump loses power, the tank will drain to your lowest hole. Most sumps won't accommodate that much more gallons and it will overflow. Depends in your design though. Plus if your standpipe is high enough, the detritus will just collect on the bottom of your overflow instead and be difficult to siphon.

[farkwar]

The hole for drain is out the top back, with a bulkhead.

 

No stand pipe.

[farkwar]

Put miter joints on it.

 

I tried twice for Glass Holes to make it for me but. He doesnt do custom work at this time...

 

Ill also give a great review on the Keter work bench( in the back ground).Very strong. Fold up tight. Comes with two clamps that fit into the bench, sweet. And only $70.

[farkwar]

I realized I need to put a baffle in for the lower holes part.

 

Otherwise it will drain to the lowest level of bulkhead. That's a lot of water.

[GHill762]

That looks really nice fark, I wonder though if it'll surface skim as well with the holes down low?

[bdevillier19]

i dont think it will surface skim. water self levels so in order to get water up to the teeth on the outside, it will also be at the same level on the inside. this is the same issue that the fluval spec V has and its only a tiny little hole. with it open there was no surface skimming, with it plugged it worked well. but, your acrylic work looks great and i'm always interested in tool related reviews.

[farkwar]

If the water level is halfway up the teeth, it has to surface skim, right?

 

Anyway, I have to run back to Tap Plastics again today.

 

Trying to make a perfect circle 4 inch hole for sock holder, made just a little too large and sock falls through on this sump.

 

Right now my drain pipes flow right into the socks, which is minor hassle at change time. I think I figured a way for the drain to drain quietly then flow into and through sock, without pipe going into sock.

[GHill762]

If the water level is halfway up the teeth, it has to surface skim, right?

 

 

yep.. it's basically your return's gph vs gph going through those holes.. if water is going through the teeth then you will see at least some surface skimming, how much is really going to depend on the return pump imo.. spec v I'm guessing had a teeny tiny little return pump.. that said, you do have a lot of "hole" down there so-to-speak..

[farkwar]

I was going to put one of those Lifeguard flat bulkhead screens down there. But without holding it in my hands I cant tell what the slots are like. Theres a little firefish in the tank, and I want to keep him in the tank.

 

The pump is rated at about 1000gph. Its on the tank im replacing, and its dialed back drastically because the drain bulkhead and plumbing is too tight, probably 100-200gph. Thats unsatisfactory.

 

When I baste this tank, the detritus justs flows around the bottom of the tank a couple times until it resettles. Main reason for this experiment. And im knocking shit off with my siphoning, which otherwise works great.

[bdevillier19]

If the water level is halfway up the teeth, it has to surface skim, right?

 

i found that surface skimming only works if the water on the inside of the overflow is lower (even if only by .5") than the water level of the display. the height difference between the 2 causes the water to fall into the lower overflow level and causes surface scum to get sucked in.