220g overflow decisions

[RadagastWizard]

I'm plAnning a 220g build.I need advice on an overflow set or recommendations. The tank is probably going to be a marineland 220.

I am either going to do an internal ghost overflow by reef savvy getting my tank back center drilled OR I might try to get a custom made coast to coast external overflow.

Now I've had an internal overflow before and loved it. But I think it would be hard to get 10x turnover with a 220g overflow that is internal bc the ghost overflow is only 2000gph.

My main concerns are durability, never needing to mess with it, and also no leaking is BIG for me.

So I wanted some opinions from people who have big tanks. Also, this will be a fowlr with inverts. I plan on having a 3 chamber sump probably 75g or bigger. I also don't know much about bean animal overflows and am not sure if I want or need one in my case? Thanks

 

[Sphack]

220g overflow decisions

I am either going to do an internal ghost overflow by reef savvy getting my tank back center drilled OR I might try to get a custom made coast to coast external overflow.

Now I've had an internal overflow before and loved it. But I think it would be hard to get 10x turnover with a 220g overflow that is internal bc the ghost overflow is only 2000gph.

Synergy reef's 20" overflow is rated to 2500 gph. I believe they're the designers of the reef savvy overflow as well.

How set are you on 10x turn over? There has been a growing trend recommending lower flows in the 5-7x range. I don't have any hard data either way, and don't know how if this is more important on larger tanks or universal.

Anyway, I'm interested in this thread since I'm looking at building out a 400 gallon tank and have been evaluating these same overflows. (I actually have a 16" synergy overflow on order for a 40 gallon I'm building up for a frag/grow out tank.)

 

[Breadman03]

I have a 150 deep dimension and had glass cut for a coast to coast overflow with BeanAnimal drains. I pulled out the factory corner flow and plugged the stock holes. I think my cost was around $40 for the glass and a total of around $150 including all the plumbing.

Did I mention that my water is silent? I just need to swap out my return pump to eliminate the vibration from a rock solid Blueline pump to a Royal Exclusiv pump, and am considering swapping my MP40's for QD models or going to WAVs.

 

[RadagastWizard]

Synergy reef's 20" overflow is rated to 2500 gph. I believe they're the designers of the reef savvy overflow as well.

How set are you on 10x turn over? There has been a growing trend recommending lower flows in the 5-7x range. I don't have any hard data either way, and don't know how if this is more important on larger tanks or universal.

Anyway, I'm interested in this thread since I'm looking at building out a 400 gallon tank and have been evaluating these same overflows. (I actually have a 16" synergy overflow on order for a 40 gallon I'm building up for a frag/grow out tank.)

I'm not set on 10x. I want this tank to be moderate flow as it's a fowlr. But I want it to have enough flow that if years from now I want to go reef I can do a mixed reef

In the turnover just involving the overflow do you include the sump? Because 220+125=335\2500= about 7x turnover (125 is for the sump and 2500 is for the internal synergy you mentioned)

7x to me just seems a bit low. So maybe I should go coast to coast because if I do internal I don't want a bulky box in there.

Also thanks for the reply breadman. Would a coast to coast have more flow and if so are there any manufactures you recommend for the overflow bow or does it have to be custom made? My tank will be glass if that matters. If it was that cheap to cut glass and do the plumbing itll be cheaper than buying reef ready for me

 

[WWIII]

For what it's worth I plumbed my 200 gallon deep dimension dual overflow with syphon and return in one overflow, and syphon and emergency ( sometimes trickle ) in the other. The stock overflows are somewhat limiting as to how much water you can force through the overflow openings (somewhere around 800 gph in my marineland), but powerheads can make up for that. My plumbing is extremely quiet and working well!

 

[Breadman03]

Coast to coast offers the best surface skimming possible. It mechanically optimizes what is going to your filtration. It can allow for higher flow, but the plumbing would typically be the limiting factor. One big plus for the smooth weir of a c2c is that there is no splashing of water.

The BeanAnimal drain takes most of the responsibility for the high flow capability. You basically have a full siphon line which is silent, a durso with minimal flow to be silent, and an empty, dry emergency line. That siphon can be adjusted from a pretty low flow to something that can drain faster than most pumps could keep up with.


Not a Dalek

 

[dave.m]

A smooth overflow is best for draining off the oily layer that can form on the surface of the water. However it is poor at pulling out floating debris. That's what the toothed overflow is best at. The teeth also provide surface turbulence to break up and pull out the oily layer. That is why the toothed overflow has been in use for thirty years on reef tanks.

Dave.M