plumbing questions

[Melonbob]

Ok, I'm looking at my new setup, and I'm noticing the bulkheads are either 2" or 1.5", but then they reduced it down to 1", maybe 3/4" (sorry, I'm too lazy to get a tape right now. Anyways, I'm guessing they did this because they had originally planned on running the mag 9.5 and didn't need large plumbing. Anyways, I plan on running a mag 18 or comparable (if any of you have suggestions on pump brand) and I'm wondering how big my lines need to be to get the 1800gph required out of my drains. Thanks!

[daugherty]

buy new bulkheads that way you will get the ones you need

[yote]

I think I would run at least 1-1/2" maybe even 2" all the way to the pump.I think that would give you the flow rate your looking for.

[Melonbob]

next question, they had 1" hoses for drain, do most of you go with hoses or plumb pvc all the way down?

[daugherty]

i used clear tubing b ut if you are wanting that much flow you are going to need a return line bigger than your 1in

[yote]

I used the 1-1/2" flex hose on mine.Just because it came with the wet/dry I was running.But I'll probably hard plumb my 125 when I start it.

[reeffreak]

What is this exactly,is it 1 or 2-1''drain?One inch drain is rated at 600gph but realistically,it can only handle 300-400gph before ''burping'' and ''gurgling''.I believe a mag 12 would be a better fit for 2-1'' drains.Personally,mags in big sizes are too loud externally and heat up the water to much ran internally.Check out the Panworlds water pumps at Premium Aquatics.Give them a call,I'm sure they can help more.

I use vinyl tubing,btw.

[Melonbob]

The bulkheads are 1.5" threaded on the inside, but there is a reducer that brings it down to 1" So I'm guessing I'll just go straight from the 1.5 to 1.5 hose, or hard plumb it down with 1.5" PVC. SOOOOO, with two 1.5" going from tank to sump, will it deliver 1800GPH? Next question, I need a pump to bring it back up, I'm wanting to build my stand at least 32" to get the display up a bit, and allow more room for a skimmer, so it's going say up 5' from the bottom of the sump to the top of the tank

[reeffreak]

My bulkheads are 1-1/2'' as well but the inside diameter of the drain is only 1''.I'm using 1-3/4'' vinyl hose but inside diameter is only 1''.I'm still thinking you are max at 1200gph(800gph realistically).

Whichever the case,you could still use a Mag 18,just the throttle it back with a ball valve if needed.

[Melonbob]

Ok, I think thats what I'll go with then, a mag 18 at 5' lift is only 1200, so it should all work together. I'm thinking of an eheim too, I really want it to be QUIET