Stevie B wrote:

1. Would a skimmer be required in a tank of this size or is that more
dependant on stocking levels ? If so, will a Aqua-Medic Miniflotor
Skimmer be man enough - quoted for use upto a 200 litre tank !!

Yes, you really need a skimmer. The higher the stocking level, the more often
you will have to empty the cup. You can use a small skimmer on a large tank if
it's lightly stocked or if you're willing to empty the cup often.

2. Do I need a steriliser ?

No.

3 Would a sump setup be a better option right from the word go ?

I would think so.

4. Are they any downfalls or issues in using this type of setup /
filtration that I should be aware of ?

If you're going to go reef eventually, I would pass on the undergravel filter.
Use of filters such as cannister or wet/dry units allow nitrates to build up in
the tank. The standard method for removing these is to perform frequent water
changes, but you can also use a product like "nitrate sponge" in your cannister
filter or in a separate "reactor." If you do go with an undergravel filter,
drive it with its own powerhead(s). As the media clogs in the Fluval, the water
flow will decrease. You want to keep the flow as constant as possible in a UG
filter.

If you do change over to a reef tank at a later date, the Fluval and undergravel
filters should be removed. A sump setup can become a refugium.

George Patterson
If you torture the data long enough, eventually it will confess
to anything.