This is the start of my trickle filter for my 90 gallon reef (eventual reef). The first pic is of the heavy duty work tote I picked up from home depot. The second pic is of two of these together inside the cabinet. I haven't decided whether to have one or two yet. If I have two I'll join them with a bulkhead. I may make one taller than the other and allow it to gravity feed the second one. I'll be putting in a 3 drawer sterlite plastic cabinet to hold all of the filter media and will drill holes in the cabinet bottoms to allow the water to flow. More pics and plans to come.