Is this overflow / return setup adequate?

[apexkeeper]

I'm trying to achieve aprox 500-600GPH of flow through my sump on my 65 gallon. This is the system I've come up with...

Glass-holes 1500GPH overflow kit. It has dual 1.5" fittings but they seem overkill so I was planning to reduce that to dual 3/4" lines. ( I like the idea of dual lines just in case one clogs )

For the return pump I'm going to use a mag drive 9.5 (single 3/4" line with 5 feet of head) Using the head loss calculator the pump comes out to 595 GPH. The line will have a ball valve on a T-fitting feeding back to the sump if I need to dial back the pump any.

Anyone see a problem with this system?

 

[IanWR]

1.5" may be overkill, but using 1.5" won't harm anything. If you are setting up a herbie you will have a gate valve in your siphon line so you will adjust it to what is needed, and having a larger emergency/trickle line just gives you a quieter trickle with more margin of error. But yes, you'll spend more on the plumbing.

 

[apexkeeper]

This is going to be a rear mounted overflow box (tempered glass bottom tank) so i can't really do a herbie setup.

I'm not sure if I can post commercial links here but I'm looking at the glass-holes 1500 GPH overflow box kit. It just uses a baffle and a vented drain pipe.

 

[thegrun]

You will want to use a 1" drain line for the primary (3/4" will not drain 600 GPH, the maximum for a 1" at full siphon is just over 600 gph) and I would use the full 1-1/2" for the emergency line. If you can afford the extra cost an Eheim 1260 will run quieter, more efficently and produce less heat. Nothing wrong with the Mag pump, but Eheims are worth the extra money IMHO.