Overflow Box Question

[JasonsPlecosCichlids]

I need to buy an overflow box. The pump is 1200 GPH. I read online to get one slightly bigger than the GPH of the pump.

Will this work http://www.fragtasticreef.com/Reef-Octopus-Hang-On-Overflow-Boxes-OCT-HOB-OVERFLOWS.htm or is it over kill or should I get one a little smaller and closer to the 1200 gph? This one is 2000gph. This is for a 300 gallon aquarium.

Thanks

 

[yogurt_21]

No experience with the model, but I like the built in siphon tube and the idea of black acrylic to reduce algae (a common problem with my overflow). I'd definitely go with the 300D as they always tend to over-estimate gph so you'd be safer with the larger model.

It is ironic though that both the 300S and 300D have 2x 1.5" tube outputs and yet have less listed flow than the 400D with 2x 1.25" tube outlets.

 

[Jc1119]

Is the pump 1200gph before or after headloss?

No experience with that box but love their pumps and skimmers. The only negative for going with a much larger box is the sound of water falling farther into it. I use an eshopps 1800 with a pump moving around 1200gph and it's not very quiet but its in my garage where there's quite a bit of pump noise anyways.


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[JasonsPlecosCichlids]

I suppose before. This will be in my living room under an enclosed stand.

 

[Jc1119]

I suppose before. This will be in my living room under an enclosed stand.

So you'll have 5-6' of headloss probably. Maybe 800-900 real gph.

Depending on the pump you could put a ball valve on the output to throttle it back if needed. I typically valve my drains, but lots of folks valve the pump a little if needed.


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[duanes]

I'd get the largest I could.
At some point you may want to upgrade the pump, and then you're set.
I also like the idea of 2 ports to catch overflow, if one gets plugged you have some wiggle room. And 1 getting plugged and backing up is quite easy.
You could set one a little higher in the box in a bean-animal kind of concept, as insurance.
Especially if the tank is in a living room, with 1 port, if it gets plugged=wet floor, with 2 you're saved a lot of grief.
I have a small similar type (CPR with 1 port) on a 55 gal and have had the tank overflow when siphon is lost, and the single port get plugged on more tan 1 occasion.

 

[DDK]

I'd get the largest I could.
At some point you may want to upgrade the pump, and then you're set.
I also like the idea of 2 ports to catch overflow, if one gets plugged you have some wiggle room. And 1 getting plugged and backing up is quite easy.
You could set one a little higher in the box in a bean-animal kind of concept, as insurance.
Especially if the tank is in a living room, with 1 port, if it gets plugged=wet floor, with 2 you're saved a lot of grief.
I have a small similar type (CPR with 1 port) on a 55 gal and have had the tank overflow when siphon is lost, and the single port get plugged on more tan 1 occasion.

100% agree, get nearly double of what you need. If you come to a point where you need more flow its very easy to just add another pump or get a bigger pump. If one of the holes gets plugged then there will still be a decent amount of flow so less chance of your floor getting wet.