Installing an outdoor panel for an indoor underground aquarium tank which will have 2 or 3 pump motors, probably similar to pool pump motors. A main 200 amp panel feeds a 125 amp sub-panel panel, then I will come off the 125a sub-panel with a.. probably 60 amp outdoor panel for the aquarium tank, the ones they use on pools (tan colored) for pump motors etc., should work ok. I think they hold about 8 circuits. Or is there a better type to use?. Should be ok to run a sub-panel off another sub-panel, correct?
