On to my next dilemna...
I spent the better part of yesterday and today planning out my overflow and plumbing setup, but I'm nowhere near having a conclusive design yet. Here's what I've considered so far:Option A
Originally, my plan was to go with a full-length internal overflow box (this was my original diagram that I posted here months ago):
Everyone gave me lots of input on this design when I posted. Lots of revisions and suggestions were offered, and in the end, I opted to change the plain drainage holes to Durso standpipes.Option B
After much thought, however, and a new placement of the tank in the room, I'm much more excited about the option of using external overflow boxes like the ones seen here:http://reefcentral.c...threadid=271539
After having the stand set up and seeing the dimensions clearly in my room, shaving 1-2" off the back would make the tank quite shallow (and I originally chose it because of its unique depth). An external overflow box seems like a much better option to me.
I have to admit that I'm a little nervous about them, though. Seems that on larger tanks (36" and up), the back wall has a tendency to crack under the added weight of the water in the overflow box. Many have suggested using two smaller external overflow boxes on opposite ends of the back wall as a way to remedy this problem. Which method do you think I should use? I'm worried because my tank is fairly wide (18" front to back) and has no supporting brace across the top.
I'm still in the process of creating a diagram, but I need a few questions answered first... which brings me to my next question: recommended flow.Plumbing Problems
Amidst all my thinking about sumps, overflows, etc. the past few days, I realized that I had totally forgotten to include head height in my consideration for return pumps.
I have on hand two Maxijet 1200's as well as a Maxijet 900, and not a single one of them are going to be suitable as return pumps.
The distance from the floor of my sump to the top of the aquarium will be roughly 47", with a few 90-degree elbows thrown in, to make matters worse.
So now I'm in the market for new pumps... recommended flow is 10-20x tank volume per hour, correct?
If it helps any, coral selection will be mainly softies and LPS, with a few easier SPS such as Montipora capricornis. But since I can always move the softies to an area with lower flow, I'd like to plan for the upper end of that range just to keep my options open.
I'm planning on including two return lines, so if anyone can recommend pumps that will give me a combined total of 720 gph, I would greatly appreciate it. And if anyone is looking to buy the three Maxijet's I won't be using anymore... be my guest, just PM or email me