What would the benefit of 30x/hour flow rate in the sump? Sounds like a waste of electricity. I have a large pump currently because I was using my return for the flow in the tank and I am completely changing that idea and going with a much smaller pump. My reasoning is that I have finally given in and added a powerhead and the pump I have been using adds lots of noise and heat which are two things I am working to eliminate.I hope to use one pump to supply both tanks. I will add valves to the lines to control flow. I am looking to keep the pump as small as possible and have been looking at suggested turnover rates for tanks -vs- sumps. Some suggest minimal turnover as low as 5x sump volume per hour to maximize filtration (skimmer/algae scrubber) Others reccomend turnover rates as high as 30x per hour.
Since the frag and sump are at the same level you would have to pump out of frag to sump. Seems like balancing this would be just about impossible.
I am looking at raising the level of one of the tanks to allow for a gravity return. it is also looking like i will be using the 120 sump as the combined sump with the tank under the cube becoming the frag tank.
Any chance you could use the space to the right of the 120 for the frag tank? Take out the cabinet next to the 120 and add another tank. If that is possible, how about moving the sump to under the 120/frag, move the cube closer to the corner and put seating next to the cube?
As it sits now are you planning on running plumbing across the gap (120/cabinet side) or going thru the wall or ???
I don't see a way to do it short of drilling the 40 and sump and allowing the 40 to overflow.
Also, have you considered an external pump for the return?
This is something i have been looking into but having trouble choosing a pump. I am running my 120 right now with a Rio 2500, figuring for head loss an plumbing i believe i am returning about 500 gph +/- at 55 watts. The cube could use 1/4 of this an I still might be good. A flow rate of +/- 700 at 3' of head might get the job done. Any reccomndations on external pump manufacturers?
Run the 40 independent from the main system. With a large canister or HOB filter or skimmer. This would prevent you from having all your eggs in one basket. (Hint: I know someone who has something that might work)
I considered this as well but now i have to heat/ moniter/ top off/water change another system. if i can include it in the big system things would be soooo much simpler! Just gotta get it built and leave it!
If you want to help brain storm this monster peae give me a call or stop by! I know there are some simple solutions. Hope to figure them out before i start building.
Sent from my future self.
where are you finding the felx tubing?
Maybe a pool supply place? It's not a pressure line here so it doesn't need to be as strong.
im on the hunt for some flexible pressure tubing i cant find anything! im debating buying those hoses on TV where they shrink when the water turns off