Paul, how will the water flow from the fuge to the display? 2G top off is kinda small for a 40g display?? Do you think you need that large of baffle area for a tank\sump this size?
But I was thinking I could have another tank gravity feeding this area.
The whole basis for this design is the ratio of cryptic fuge:display area. By building a tiny fuge area it kind of defeats the whole purpose of even doing it this way (not that the design isn't impressive). I would have gone with a much larger fuge partitioned from the main tank and maybe an overflow behind that into a small sump area for chemical filtration and maybe a small hang on skimmer. I like the top off sections you built in though. Were you planning on using a dosing pump to run the different sections?
Tyree's zonal approach (even if looked at only in theory) should work based on high school science principals. The nutrients should diffuse through the barrier between the zones into the cryptic zone housing the filter feeders and other organisms that feed on/process DOC, lowering the overall nutrients in the tank. Our tanks strive to acheive homeostasis. If we have high nutrients, bacteria and other organisms will flourish and populate to a point that the existing levels can support. As the nutrients are depleted by the growing population of organisms the organisms numbers will level off and finally balance out with what the nutrient source will support. Techniquely if the proper ratios can be acheived in a tank and kept in balance over time, a tank could require no skimming and minimal filtration beyond the natural processes it conducts on it's own. It would take awhile for a tank like that to mature but once it did it would remain stable mostly on it's own.
the larger the tank the easier it is to come close to achieveing stasis. However, even in a small tank that has reached maturity, the death of an inhabitant shouldn't throw off the entire ecosystem so much that it can't metabolize the excess nutrients. Nature is always working to sustain balance and it is no different in our tanks. Unless you have a full grown angel in a 30g and it dies, a properly stocked tank shouldn't have any serious problems when an inhabitant dies (barring the release of toxins or pathogens). I'm also talking about the filtration portion of Tyree's zonal approach. I understand that chemically a tank is always in flux and natural processes are using and releasing trace elements. With respect to bioloads though, if the tank is properly setup and matured reaching a balance over time is a natural occurence.
More gadgets to control flow = more potential for failure :lol2:. I like to have 4-5 days of top off capability so my care taker have one less thing to do when I am traveling.. thats is why my top off container is 35 gallons.
Thanks! I increased the topoff as much as I could because of what you and cali said. Hopefully I won't get that much evap, I kinda I have a feeling I won't especially with having everything in one tank.I go through about 5g everyday on my 120g