Overflow for a 20L?

Hey J, whats your count up to? How many holes?

hobbzz, you won't be disapointed that you drilled, and how much have you saved already because you didn't have to buy a overflow box?"

Don't worry about the couple of bucks, just make sure you get exactly what you want the first time!
 
I lost track at 35... mostly because of nights where... like when you stopped by... I drilled 7 or 8 holes that night.... and then the 5 for jessica, and the 3 for TJ, and then the 3 in my Ro resivoir....

I should sit down someday and try to remember.

Brent, Remember I told you to go 1.5", and that you'll find more parts...
 
Then you had to re-drill a 10 for me and a piece to sturdy it... so thats a total of 6 just for me. + the little ATO holder!!

thankx again, if I hadn't thanked you enough!!!
 
Your certainly welcome... Sometimes I sit an think about how much better something as simple as a hole in a piece os glass makes this hobby.... and the window of oppertunity it has opened up.

J
 
I would drill too but if you are going with overflows I have two of them I would trade for some future frags.
 
Mako56 - Thanks, but already drilled. :)

Bri Guy - So far it's $20 more than one of those overflows I posted, but much more fun. :D Well, DOING the work is fun...researching online for 20+ hours is NOT fun. ;)
 
But did you add in the cost of your carpet below the tank, cause you lost syphon on the box overflow? ;)

The ease of mind when not around (with a drilled tank) is priceless!!
 
I'm working on a couple sump designs and the one with the biggest fuge and best flow will give me 4.6 gallons in the fuge with a surface area of 132 square inches. The skimmer section will hold 1.3 gallons with a surface area of only 42.5 inches. The overflow drain will be split into 2 pipes. One going into the skimmer section and one going directly into the fuge with a ball valve to control flow. My question is wether or not the skimmer has access to enough water to be effective? I'm not talking about water depth as it is a bakpak, but access to enough water volume? My guess would be yes it's fine since it can only pull in so much water at one time anyways. But I could be wrong... should the skimmer section be proportionaly bigger than the fuge? Should their size be determined by some ratio to each other? I'll post some paint pics when I get home...
 
Here it is. The green baffles go from the floor up to make the bubble trap and determine the minimum water level in the skimmer and return area. The orange baffle goes from the top down as part of the bubble trap. The black baffle (attached to the red one in the fuge) goes all the way from the top to the bottom, directing the flow through the fuge. And finally the red baffle goes up from the floor to determine the water level in the fuge. So anyone see any problems with the skimmer/intake section being so small?

fuge.jpg


BTW the main overflow drain will be 1.5", out of a 1.25" bulkhead. Piping is bigger than the bulkhead because of a durso. It will run under the tank where a "T" will split off tapering down to 1/2", go through a ball valvle, and empty into the fuge. And of course the other end of the "T" will empty into the skimmer area.
 
I am not as reef smart as most of the people here but if it were me I would get most or all my flow going though the fuge.
 
Just some random tequila inspired thoughts:
For the baffles you want a over/under/over (not sure if that is what you have, my colors are different than your explanation).
You simmer is going to act like a closed loop in the skimmer chamber only. If your ball valve only lets 50% into the skimmer chamber you are only going to skim a max of 50% of the return flow (much less when you consider not every drop is going to make it to the skimmers input).
Consider using eggcrate in the refuge to create shelves and different current zones.
 
Mako56 - Yeah that's exactly what I was trying to do, I'm just not sure about the amount of water the skimmer has access to. I don't think it should matter but you never know.

Yaitisme - Thanks but I already looked there. I started out with one of his designs, and modified a little to fit my needs. but I was bored at work today and figured out my own (the one that I posted here) that nearly doubles the fuge area. So if the skimmer isn't a problem I'm going to go with mine. I actually got most of my info from that sight. :)
 
Yaitisme - The bubble trap between the skimmer/intake section and the return is an over-under-over. And the ball valve is after the "T" and only connected to the 1/2" pipe that feeds the fuge. As per melevsreef.com suggestion I'm going to shoot for 25% of drainage into the fuge and 75% into the skimmer chamber. I'll obviously have to guesstimate since it's just a ball valve. :)
 
Good deal and thanks for the coupon code. Obviously shipping is quick by reading the comments here, too bad I ordered my stuff yesterday though, wont receive it till Tue.
 
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