Remote Sump Plumbing Queston(s)

I will be running a remote sump close to my 180 for ease of access. I plan to use spa flex tubing. My overflow drain holes are cut for 1" bulkheads. In all my other sump setups - I have a virtual straight drop into the sump. With this one - I will be going about 6' over to the sump. Any suggestions on how I should plumb this to keep the gravity feed flowing through the lines? I was thinking about using as many 45's that I can in place of 90's. Here are some questions I currently have:

- If I place a 2" pvc pipe above the bulk head (in the overflow) would that significantly increase the rate of water passing through the 1" lines below?

- If I do need to use a 90 elbow, is there logic in using 1 1/4" or 1 1/2" 90 degree pvc in those areas to help increase the flow space w/out restricting flow - or do I want to somewhat restrict flow to keep the suction going?

- is there any benefit when doing a medium size run of tubing - to use larger diameter that what the bulkhead is rated for. Example using 1.25 or 1.5" tubing and then reduce down to 1" when it hits bulkhead.

Finally then - the return line also has 1" bulk heads. Should I reduce that down to 3/4 for the return or keep the 1" on the return to maximize flow in the DT.



Thanks everyone for the help and advice in advance!

Jason

 

Thanks guys for the help so far. Both holes in the dual overflows are 1.75" to allow for 1" bulk heads. Do I cut the drain hole larger to allow for larger bulk head? Not sure how taboo that is making an already cut hole - larger. Do I increase size of tubing to allow to less friction. Do I keep status quo and just deal with it? ALso - as far as return pumps go, I have another issue/question. I maximized my internal cabinet space to fit as large of a sump as I could. This doesn't leave me any space for external pump. However, I was thinking about mounting a shelf to the inside of the stand above the return section and placing the return pump there. It would be about 20" from bottom of sump. Was thinking about using pvc dropped down into the return section of the sump about an inch from touching the bottom. Anyone see issues with the return pump sucking up water 20" from sump and then pushing it out about 12' head?