Frag tank(s): what size?

meermann

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Hi guys, I need your advise.

I decided to start frag tank, mostly for SPS - but in the future I deffo intend to grow out torches and zoas. Now got stuck on the size selection.
In general I restricted by 80-90G of entire water volume in the system. It's because of insurance reason, my landlord doesn't allow me to keep a lot of water in the rooms.
So the potential choice is: 48x24x12 tank or 2 units of 24x24x24 plumbed to entire system.
The equipment leftovers I have right now and can use for that tank: 2xNero3, 2xGyre 330, 2xHydra 32, 24" AquaticLife hybrid, Clarisea fleece filter, and some dosers, KH director, Profilux computer etc.


48x24x12:
Pros: more manageable flow, I noticed my Gyres work better in longer tanks then 24". Cheaper then 2 x 24x24x12. The plumbing is less complicated. More compact in comparison with system of 2 tanks.
Cons: I may be hard to keep together torches and acros in the same shallow aquarium, because of lighting and flow requirements. Even in case I still able to setup the appropriate PAR, the flow will be the same across over the tank

2 x 24x24x12
Pros: more configurable, I can be able to feed LPS tank heavily using baby brine shrimp, fleece filter quickly makes the water clear again. Easily detachable in case of I decide to split the system
Cons: plumbing is more complicated, need 2 return pumps, the flow in SPS tank(top 1 priority) is expected not so good as it can be in a longer one, a bit more expensive. Footprint is more that 48 in total because I need some place for pump magnets.
 
This looks to be a personal preference. I would take the path of whichever meets your purpose best. Pick your battles and make a choice, if one does SPS better than LPS, then make that choice. I don't think anyone here can help you make this decision as it appears you've thought it out pretty well.
 

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