Ok just a thought but have you thought about going with a scrubber instead of a fuge? With the top tank being so high you can use its drain to feed a scrubber instead of feeding the middle section.
Dont worry about trying to control the exacted flow to each tank. Just make a manifold off the single pump with valves to control what tank gets what water and how much.
Another thing if you ran each tank off the manifold and each tanks drain strait to the sump you will have more control over the total system. For instance you can turn off the valve to one row and work on it with out turning off the pump.
I see your trying to defy the laws of gravity by having sump 1's water level lower then sump 2's water level. The water level in an area is controlled by the highest line that water has to flow over not the lowest. What i am stating here is if water has to fill up an area before it can overflow to a lower area it will.
With that said and supposing your going with the set up in this last drawing then flip them and make the fuge the first area water comes into then into the equipment section. This may lower your pod count a little but not in the long run. Your going to however gain a safety net over the fuge going sexual and crashing. If this happened all the genetic by products from the fuge will first go through the filtering area and the skimmer. Make one last section for the evaporation control and top of. I would use an external pump giving you more sump area. External pumps tend to have more torque making them better for use with a manifold and multiple tears.
One of the primary reasons I am going and will go with a Fuge is because of not only the added water volume but the possibility of turning the fuge(s) into compartments as well for stomatopods, albeit the less interactive ones that don't like to perform for the camera...even species known for there high level of interaction can be shy (something I don't need to tell YOU (TundraGuy) but for the sake of others...)
Basically I take Rocky (G.graphurus) & Shockwave (G.falcatus) in one hand Rocky is extremely interactive ALWAYS wanting to perform for the camera...in the other hand there is Shockwave who is to scared to basically ever show his face...So in order to make room for an interactive specimen in the Display tanks I need to make room, taking out my non interactive species, placing them in the refugiums behind the stands.
I've even thought about using the refugiums as my "Stomatopod Gym" by this I mean any species deemed to small for visual enjoyment in a display but, still exhibits high interaction even at it's small size, is kept but put into the refugium where it can feast at will upon the pods etc. (talking about stomatopods no greater then 40mm in size). By allowing them to gorge they should grow up fast and become large enough for visual enjoyment in the display stand. (2xG.ternatensis, 1xG.viridis,...all less then 40mm long)
With this new sump design that I created last night, it would be possible to do all I have wanted to...essentially setting up a whole second "Ultimate Multi Mantis System!" this will obviously at the very least double my accommodation levels!
Having said this one must remember that all the tanks going behind the displays are designed for species less interactive/very small...so the likely hood of capturing them on camera is going to be a lot low...
It's a rather simple design...
Taking the normal aquarium HOB filters and linking them together in a way that LFS have there stacked aquariums linked (vertical pipe), again let me know if you see of flaws...
The dark blue is water in operation whilst the light blue represents the fail safe reservoir where water builds after power dies.
The ONLY thing I dislike about this sump...is how thin & tall it will be...likely around the 600mm Long (too match displays in front) and probably the same height as well (350mm for top 2, 450mm for bottom sump) however due to the requirement of offsetting the 3 sumps (top 2 above whilst bottom sump below)...means the stand would like be over 2mtrs tall and it will not be as wide as the display stand more around 200mm-250mm (since there is only 560mm between the wall and the rear of the stand).
There is always going to be a need for a fail safe reservoir and a deep one -_- just cause of my 'gumbicus noobicus' choices when I had the tanks made (I MUST of been on CRACK!?!) basically when the power goes out the water in each tank must drain to below the bulk head, in operation the water line is JUST over the bulk heads (to allow for maximum water transport whilst not overflowing/giving it too much), when power goes out the water line must drop about 50mm in each of the 2 top tanks so around 4inchs of water level is going to always fail when power goes out.
Now because my tank dividers do NOT have holes, water can only flow over the divider, this means the very last compartment (dictated by placement of overflow/rite now, FX5 input to canister) acts as the fail safe reservoir & place where evaporation happens, no other compartment water level changes (even the one beside this last compartment, even though they share the same tank, it's due to the water having to flow over the divider). This last compartment acting currently as a water reservoir and evaporation chamber, fluctuates in levels rapidly due to it small space albeit deeper still...(in a week it can drop over 10cm in water level).
However all this should be fine in the latest design, having the bottom sump lower and running at operation lower then all other tanks above just means that all tanks above will drain to just under there bulkheads/overflows down into this 1st sump/equipment sump. (although it looks 'tight' in the pic, there will still be at the least 300mm above each sump tank for maintenance).
Another thing I noted of interest which should actually be self controlled so long as this current design ACTUALLY works...when I had my old AquaClear110 running on my nano a while back I noticed that it's flow was really strong for such a small nano which was actually larger then these compartments...however due to me 'choice' of using bulkheads as overflows, it seriously reduces/limits/dictates the flow I can have, thus the flow coming out of the refugiums and into the displays as well =) all (I hope) it will be a case of is, adjusting the 1st sump pump until I find the point at which I am at now (water just over bulkheads).
In order to access everything, my TV is getting a new stand as well which I am making at work, the whole thing will be on lockable wheels so I can pull it out and push it back easily
Better leave it at that
![Er... what? o_O o_O](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f635.png)
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