Mojoreef said:...From my experience I find we don't have to put alot on the size of overflow as we want to keep it in the tank for the most part, so normal overflows will be fine. We start the overall plan by taking care surface water. This can be done easily by using the return water from the sump. So just come over the top with at least two returns, they can go directly into the tank pointing across the surface about two inches deep or by using seaswirls if desired. Keep it simple here and use the sides of the tank to bonce flow off of with your ultimate destination being the overflow
for normal outputs
For the main part of the flow you can use either a closed loop system or powerheads to create the overall flow for the mid section and lower section of the tank. The idea here is to try to interlace the flow sources so that they help each other accomplish the overall plan.
So here is an end view of a tank, it shows some good flow coming from the back of the tank and going from a point just above the sand bed and pointing slightly higher towards the front. Then Their is a second level of flow that takes the flow from that point and pushes it higher to the upper flow which will take it out of the tank.
Remember its not so much as "how much flow you have" as it is "how well placed it is". Ok now for a top down flow. What we are looking for is an over all coverage and the ability to keep as much of the food/waste/detritus in the water column. So having more outlets with less flow per is going to make that easier to accomplish then to have just a few outlets with a ton of flow.
So in this pic it gives you a general concept looking from the top down as what kind of coverage we are looking for
Ok so that is a basic idea of what we are trying to do with flow in the tank, so the next thing would be how to accomplish that using pumps, pvc and other neat toys....
Mike
COuld be Krish man I have like a hundred of these drawing I have done for folks over the years.
Mojo
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