ok i have a 2 reef tanks. one in one room, one in another. the two rooms are seprated by a hall way. with a distance (as the crow flies) of 10-15 feet +/-. i have no basement, a 3 foot crawel space and its a one story house.
ideas on how i can get them all on the same water would be appricated.
Is this sketch a view from the side or top? (I assume top view)
It will probably not be an easy solution, so not recommended unless you have your own very compelling reason.
If you want to plumb them together, I think an intermediate may be needed. Essentially, there are two methods involving an intermediate that I am considering:
1) pump from 150g up into a higher intermediate tank that overflows back into the 150g at full flow rate, pump from 30g up into higher intermediate tank with a separate overflow back into the 30g tank at its full flow rate, mixing action happens in the intermediate
2) overflow from both tanks into a lower intermediate with separate returns to each tank respective to relative overflow rate, mixing action happens in the intermediate
Either case, the intermediate would be best either down in the crawlspace or above in attic space, though it might work to raise it as high as possible above the tanks in either of the rooms.
Use of an intermediate is a better method than trying to balance flow between tanks with pump rates both ways. Even if one tank is at a higher elevation than the other, you may need a booster pump on the overflow line to pass water through the ceiling or above head height in the hallway or through the crawlspace.
Edit: Any method will require fairly powerful pumps due to the length of pipe needed and the number of joints/corners likely needed to plumb the system, as
@Ben.QLD2 mentioned.
