bubble king or led?

[mytank90]

hello i have a freind who want sell me a 3 yr old bubble king 250 for 800.00 and wondering about skimmer .how deep in sump sould it be and are there any prblems with them i sould know .right now have 180 gallon fish only tank with a vertex 280 skimmer i like .i also looked at getting kesil 350w led instead of my halides.my prblem with led is i am colour blind and cant realy see any difference so find tuning them would realy suck .i use 2 250 halides over my tank