Personally I would be worried about the stand shrinking and expanding in the varying weather conditions. When it is cold it will shrink and if it becomes icey then you get possible problems. When it warms up again the tank will expand and stretch the seals. This over time will surely lead to leakages or in the worst freezing cases cracks in the tank..
bunjiweb
If you are prone to long power cuts then you can hook up a system where a gennie or a battery kicks in once the mains dies.
andywg
These should be considered very impotant.
Are you going to be building the tank yourself?
If so, i would be a little careful on your dimensions, the tank seems to be around 90 gallons but it might fall apart due to uneven pressure.
Check with professional tank builders.
In respect to the heater, are you using a canister filter or a wet dry or what?
With the canister and wet dry you can use an in line heater, which attaches to the hose or pipe going into the tank from the filter.
The water is heated before entering the tank.
These are very handy.
The alagae problem can be taken care of if you plant your tank heavely.
Alagae grows from phosphates, which come from fish waste and uneaten food.
Ofcourse there will be some growing, but you can get an alagae eater for that problem.
You might want to wait on purchasing the carp also.
Buy some feeder gold fish to cycle the tank.
After half a year or more, put the goldfish into your pond and then buy the carp.
Carp are known to have sensitive hearts.
The stress of the high amounts of ammonia and nitrites can kill them and that would be like throwing money away.
Be careful without a top water evaporates very very quick, which increases ammonia and nitrite.
Watch out for dragonfly larvae, they are known to eat fish.
Dragonfly's lay their eggs in water and fish don't usually eat them.
Hope this helps
I really don't mean it that way, I'm just learning a LOT working there, and I want to pass on what I learn]
