trualm

you can get them with overflow and ones that can be drilled might take some looking though and what ever overflow kit you get or put together will tell you what size of holes to drill

4 to 5 watts is good for most just make sure you know the coral you are going to buy I had lps softs and clams under 4 watts for 8 months and all did very well croaca clams can be given food to make up for less light got mine at about 4 inches and now it at 7

you need to upgrade the ballest and i think that is it as long as the ballest can handle that wattage it should e fine

ick attack is 100% organic and works great it is safe to use with everything has no copper in it

what all do you have in the tank and how long have you had him