Just getting back into my Nuvo 16g and trying to finally set it right, and buy the right equipment for it. So far I have bought Steves In-Tank media baskets and the fuge basket, waiting on the underwater fuge light, Tunze ATO for nano, AI Nano lighting with controller and a small Hydor pump for more circulation. Now I am trying to figure if a RKL or Apex needs to be in my future. The problem I am having is the why would I need it? 1. the ATO and lights have their own controller that will be used. 2. I would like a mp10 also, however it also has its own controller. So the only thing I can see me needing the RKL for is heater backup and possible a PH monitor. Plan for the tank is not crazy just some zoas, polys, maybe a BTA and two small snowflake clowns. am I missing something here. If all I am doing is a heater back up there has to be other options for this as well, right?