Hey, everyone here will tell you that their are so many ways to treat you tank, accessorize it with filters, Skimmers & UV
sterilizers, but it shouldn't have to be that difficult.
Here is what I have in my 150g tank and aside from a slight Ich Outbreak before the chiller was purchase, I have fish in the tank now for over 3 years.
Here is whats in my tank as accessories:
2-Ehiem 2217 Filter
Inside each 2 Chemi Pure bags, 1/2 lbs Ammonia Remover media, 1-White fine pads & 1-Blue Coarse pad.
1-25 Watt UV
1-Natulalis TE Skimmer in the Sump of the Wet/Dry
1-Maxi-Reef 300 Wet/Dry Filter with Bio Balls
1-1/4 HP Chiller
2-Titanium Heaters in case in fails.
As you see I try to have extra filtration in case others fail when I not home & I only purchased the chiller since my tank use to fluctuate in temp. a lot. If you keep thing simple, you will enjoy your hobby more since less money is being allocated to it.