Help Me, Overflow problem with dual megaflows.

[KH971]

Overflow help Needed,Can't figure it out!
Okay I have just plumbed my 210 AGA tank with dual Megaflows (1 inch and 3/4 inch) in each Megaflow. I am running a Gen-X PC 70HP pump, it has a return of 1500 GPH. I decided to use both 1 inch and both 3/4 bulkheads as drains. I put 4 1 inch pipes with Stockman overflows, I used a reducer to take the inch pipe down to a 3/4 inch for the bulkhead. The caps are 2 inch caps. I drilled 1/4 holes in the top of the the caps of the Stockmans and that was not enough it was sucking the water down so i enlarged the holes all the way up to 1/2 holes and now it pulls the water down fast enough. But now I have air pushing back up the 1 inch bulkhead, while the 3/4 inch sucks like mad. It is loud!!! The 1 inch and 3/4 inch pipe drain together under the tank into a Y shaped fitting that takes a 1inch pipe and 3/4 inch pipe and converts it into a 2 inch pipe, There are no restrictions.
Why does the air try to bubble up the 1 inch pipe? All pipes are exactly alike. I need the quiet but this is rediculous.
Please help me if you can.

Hobby Experience: 20 gal. fresh, 40 gal. Salt., 150 Gal. reef
Current Tanks: 150 gal. tall , dual 400 MH's 14k, Kent Nautilus skimmer, 2 Ebo Jager heaters, Korallin 1502 reactor, 20lb bottle CO2!! custom sump with refugium coming.



Open this post in a new window | Report this post to a moderator | IP: Logged



All times are GMT -5 hours. The time now is 07:11 PM.

 

[tygger]

Im not quite sure I understand your setup. So you have 2 megaflow overflows both plumbed identically? So in each overflow, you have 2 stockman setups using 1" pipe through the 1" bulkhead and a 1" pipe through the 3/4" bulkhead via reducer.

That sounds fine so far.

Then underneath the tank, how do they come to the Y? Do they both go straight down to the Y or is there a bend on one of the pipes?

Also, when you say there's air bubbling up the 1" pipe... do you mean that water is backing up that 1" pipe?

Could you take a couple pics?

 

[prugs]

I made the mistake of trying to push all the water from a reeflo dart thru the overflows of my 210gal. There is no way to quiet the setup.
Use the big pump for a closed loop (circulation).
Get a pump of about 800gal/hr max to run thru your sump/fuge.

 

[kgross]

The vent holes in the top of your stockmans are to large, you should not need them to be big. How large of a hole do you have in the side of the pipe for the water to drain through?

Kim

 

[KH971]

I fixed my problem, I now have dual 1 1/2 dursos in each maegaflow and they take 1500 GPH like it is nothing , I bet they would handle 2200 GPH easy. It is a very tight fit but it works like a charm.

 

[prugs]

<a href=showthread.php?s=&postid=7196848#post7196848 target=_blank>Originally posted</a> by KH971
I fixed my problem, I now have dual 1 1/2 dursos in each maegaflow and they take 1500 GPH like it is nothing , I bet they would handle 2200 GPH easy. It is a very tight fit but it works like a charm.

How are you going to stop all the bubbles/splashing in your sump?

 

[E-A-G-L-E-S]

thats what baffles are for
...kh971....i was just gonna say make the durso's at least 1.25"

 

[prugs]

<a href=showthread.php?s=&postid=7196970#post7196970 target=_blank>Originally posted</a> by E-A-G-L-E-S
thats what baffles are for
...kh971....i was just gonna say make the durso's at least 1.25"

Ok,
You got me. I should have specified all the noise of the splashing & bubbles.