well guys im in the last stages of my plywood build, water goes in tomorrow. So im planning on building a 3 drawer trickle filter, iv bought the tank overflows, elbows and pipe (all from tmc, tropical, marine ? in manchester) iv also got the 3 drawer system and 35g tub, my tank is 125g uk or 160ish us. 2 overflows at 1 inch and also the pump is 5000 liters an hour i think thats 1100g uk. After reading all the great threads on here im confident on the build. Anyway to get to the point im just unsure on two things, 1= my tank is near a window so will direct light have an adverse affect on my fiter media and 2= im not sure what media to put in the drawers? i was thinking drawer 1 a sponge of some kind and floss over the top as mechanical, drawer 2 bio balls (not submerged) and 3= pot scubbers(part submerged)..any advice would be great and will post pics when get started a week today....many thanks