[Stones]

I can't speak for any of the other all-in-one nano systems other than the aquapod line. I currently own the 12 gallon version with the 70 watt HQI Sunpod light. In my opinion, the tank is very well built and needed no mods to be used to house a mixed lps/sps reef. There is enough room in the back "in tank sump" chamber to house a pre-filter sponge, carbon or any other chemical resins, biological filter media such as matrix or live rock rubble and still have enough space to have a HOB type skimmer. Currently I'm running a rio nano skimmer on the tank and have been quite happy with it, other than the slight amount of noise generated by it.

I expected with the HQI lighting system that the tank would need some sort of extra cooling mods installed in order to keep the tanks temperature stable but the temperature in my tank stays relatively constant at 80F irregardless of whether the lights are on or not. No heater has been added to the system either.

The only feature that may be worth changing is the powerhead used to return water from the "in tank sump" to the actual display area. Upgrading this to a Maxi-jet 600 or 1200 would most likely be beneficial if you are using this as the only source of flow in your tank. I thought I'd try out the hydor koralia nano powerhead instead of taking this option and find the amount of flow produced by this along with the small amount coming from the stock powerhead to be more than sufficient to keep my acros happy.

The Aquapod line also comes in 8 and 24 gallon sizes depending on how big or small you want to go. I know Puff has a thread going on canreef here detailing the progress of his 24 gallon aquapod that he did a few mods to.