Buying a bulk order from marine depot

There is a promotional thing going on at marine depot and i found this the best time to buy the remaining things for my 20g reef (softies and lps) saltwater tank.

Ok i have:
Tank
Stand
Powerhead (maxi-jet 1200, i may just use this in the salt mixing container)
Sand (carib sea ooltic aragonite, not live sand)
Salt (reef crystals)


Shopping list that i have ATM
http://www.marinedepot.com/md_viewItem.asp?idproduct=MD2101
http://www.marinedepot.com/md_viewItem.asp?idproduct=ACRDM


I am trying to get a 150 watt MH second hand so that should be covered.

What else should i get?

fairly simple question and no replys, wow great help. Im ordering tommorow so i guess only these two things is what i need.

I have a maxi-jet 1200 already so extra flow (if needed) is covered, if the extra powerhead is not needed it would either go into a mixing container or freshwater tank.

I forgot about test kits, thanks for reminding me, i have a reef master test kit (phosphates, nitrates, calcium, alkalinity) and all i need to get now is ammonia and nitrite, should i get magnesium and stuff as well?

Yeah im probably going to get the prefilter attatchment to use with a phophate removing type chemical filtration.

The second hand, i have 2 offers, one on a viper for 175 and another for a sunpod 24" for 200, im trying to go for the sunpod since that is a great deal but the sunpod is older (january this year) Your right, i should get a new bulb for this. What bulb should i get?

ok on second thought, i am probably gonna get the tunze nano DOC skimmer, cheaper and pretty much just as effective if not more effective than the aquaC, just that its in the tank not external.