Nice! For some reason I have to adjust mine about once a week. I also have my sump in the basement. I think it may be my pump is fluctuating/ not holding steady. Ive got another pump and another tank going next to my 180. Once thats set up the new pump and new sump will be up and running hopefully no more adjusting.My sump is actually in the basement. It's set up as two separate herbies. There are four lines running into the sump. If you teed drains together you'd be cutting their capacity in half. Here are a couple pics of my current setup. Btw...gate valves are your friend. They make it much easier to fine tune things vs a ball valve.
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Either way but I'd do all mech on 1 side and put return pump on the other and all bio in between. As for pump figure out your head and get a pump that will put out 1200gph at the tank. Or get an adjustable pump if your sump isnt in the basement.[/IMG]
A or B or something else ?