How does this sound for returns and drains?

PLNelson

White Trash Astronaut
I'm planning on haveing two 1" drains, and one 3/4" return. Would this be adiquate, or should I use a 1" return? Thanks
 
What size tank and how much flow are you talking about? I have a 120 AGA RR and it has two 1" drains using 1 1/4" standpipes and two 3/4" returns and I am flowing about 600 GPH.

HTH
 
Sorry, It's a 46 gallon bowfront. I guess I was thinking that a maximum of 600 GPH was about where I wanted to be.
 
What are you going to use for your standpipes? I would use the stockman version. You can build them yourself from his website. I did, they work great!

:beer:
 
Use Larger Diameter & Quieter Pump

Use Larger Diameter & Quieter Pump

The water flow calculators on the lower left side of the Reef Central home page will help you out. I believe that the following rules should apply:
• Drain capacity > return pump capacity
• Overflow grating capacity > return pump capacity

Per the Drain/Overflow Size Calculator (http://www.reefcentral.com/calc/drain.php), each 1” drain should give you 600gph for a total of 1200gph. I don’t know what flow rate your overflow grating permits but my Megaflow permits ~800gph.

You can use the flow calculators to determine your return rate through a ¾” opening versus a 1” opening to see which diameter you should use.

My advice is to use the larger opening (1”) and get a smaller and quieter pump. If you still need to increase flow, use in-tank flow devices like a Vortech. If you need to reduce return flow, you can always use a PVC fitting to neck down the opening.
 
I don't know why it hadn't even occured to me to check out the calculators, but I'll do that.

I've already been buying parts for the stockman standpipe, and I'm also going to try his idea for an attached overflow.

Is it OK to limit the flow of the drains with vlaves?
 
Thanks for the help everyone, I really appreciate it. One last question, What brand pumps work well, or better yet, what brands should I avoid?

Thanks again.
 
Replacing Big Return Pump

Replacing Big Return Pump

I have an Iwaki MD-30RXT. The flow is great (~800gph) but my family thinks it's too noisy. So I'm looking for a slower but quieter return pump supplemented with in-tank flow devices.

I’d consider an Eheim 1260 return pump if I can figure out where to get a bulkhead or adapter for its BSPP threads. I’d also consider a couple of Vortech in-tank propellers once a controller is developed for them.
 
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