Hal,
your plan sounds fine to me....
One thing though... if you wanted a deeper sump, you could plumb your skimmer overflow through a bulkhead into the sump......
I agree with the idea of adding a smaller clown.
Clowns are born male and eventually one clown will become a dominant female.
If your existing clown is female and you add a female... you can have problems....
adding a smaller clown will assure he is male and the existing clown will become the...
180g AGA RR
4" DSB (southdown)
170# figi LR
35g acrylic sump
iwaki 55 return
bullet 2 skimmer w/ iwaki 70 pump
2 3/4 sea swirls on returns
3 X 250w Iwasaki 6500K runnig off of PFO EYE ballasts
2 x 160w Actinic VHO lamps running off of an icecap 660
4 MJ powerheads running off of a red...
Drygoods:
Marine Depot = 10
Good Service and prices. Informed people. Great Prices
Atlantis Aquatics = 10
Great customer service. informed people. Great Prices
Champion Lighting = 7
cust service needs work. informed people
Aquatic Tech = 1
Bad cust service. uninformed people
Reef...
I use a pair of 300w visitherm heaters in my sump to heat my 180. No problems for over 5 years.
Of course, they only go on during cold night when the halides are off. I have been thinking about using a temp controller, but have had no real reason to spend the cash yet.