I need some ideas on some additional equipment I can use to get a cleaner water. I do two week water changes and by the middle of the second week, it's very dirty with algae starting again.
Besides doing more water changes, how would you tweak this system to become a cleaner system?

Here's the setup:
1 ETSS 1400 skimmer w/Panworld 250
1ETSS 800 run on extra flow from Hammerhead
2x100 Rubbermaid Tubs
240 gallon DT
Approx 300lbs of LR
120lbs of LS
4x Tunze 6100's
Hammerhead return pump
2x1800gph overflows (4x1.5"downs dumping into a 3"sewer pipe.
55g water changes every two weeks
1000ml of BioPellets in a Vortex reactor
2gallon refugium with assorted algaes

Inhabitants:
5"Powder Blue
4"Sailfin
5"Sailfin
2x3"Clarki's
3"Coral Beauty
2.5"Six Line
1"damsel
4"Hippo
5.5"Hippo
Assorted anemones/softies

In addition to this, I have access to another etss 800 and two 57w aqua UV units. I don't run carbon because of the lateral line theory.