So I have an AGA 210 with built in overflows. I wanted to add my cpr1200 overflow box so I can add a second sump. Is this possible? Please advise. I really want to do this but if not FX5 it is.
Adding overflow box to tank that already has built in overflows?
- Thread starter david503bk
- Start date
mjohns;4358958; said:
I am worried about the waterline? Will my built in overflow line and cpr be different? And if so is there a quick easy fix? Lets say waterline isnt even then one set of overflows wont work. That is my concern
That is my plan. ! sump to the built in overflow and a second to the cpr overflow. I am worried about waterline levelalexpie001;4358961; said:
Yeah each sump will be doing 900-1200gph. The one I have now hooked up to the built in is a mag18. Looking to do the same on second pump with cpr. Soo 2000+gph!
I see your concern and it is to a degree very valid. If the intake point of the built in overflow is 23" from the bottom and the intake point of the overflow box is 22" from the bottom... the overflow box will take on the bulk of the flow and the built in will be starved...
But, (in the example above) once overflow box reaches it's max flow rate, the water will simply rise to feed the built in overflow.
So whichever intake is lower will certainly flow at the maximum capacity and whichever one is higher will flow a bit below max capacity. As getting both to function perfectly at max capacity but not beyond is a very difficult, yet theoretically possible, task.
As mentioned above, if you are using two separate containers as sumps, you will want to connect them. You can drill each and connect them with pipes through bulk head fittings, or you can create a couple of siphon connections. The siphons are a lot easier to create but hold the risk that if the siphon breaks the critical connection is lost.
The reason they must be connected is, as you suggested, it is unlikely both will function at a perfect balance. Also if one pump burns out the overflow will still take on water fed by the pump still working in the other sump.
In conclusion, feel free to add the overflow box to your tank to increase the potential flow rate in your system. Just connect the sumps if you add a second sump container.
But, (in the example above) once overflow box reaches it's max flow rate, the water will simply rise to feed the built in overflow.
So whichever intake is lower will certainly flow at the maximum capacity and whichever one is higher will flow a bit below max capacity. As getting both to function perfectly at max capacity but not beyond is a very difficult, yet theoretically possible, task.
As mentioned above, if you are using two separate containers as sumps, you will want to connect them. You can drill each and connect them with pipes through bulk head fittings, or you can create a couple of siphon connections. The siphons are a lot easier to create but hold the risk that if the siphon breaks the critical connection is lost.
The reason they must be connected is, as you suggested, it is unlikely both will function at a perfect balance. Also if one pump burns out the overflow will still take on water fed by the pump still working in the other sump.
In conclusion, feel free to add the overflow box to your tank to increase the potential flow rate in your system. Just connect the sumps if you add a second sump container.
This is exactly what I wanted to hear. You always solve my problems. Thanksnc_nutcase;4359245; said: