Shenlon, why not start a thread on that topic if you're going to ask more questions about Laguna pumps? 
What I did was set the plastic light diffuser on top of the bioballs to make a flat area, then took a 1/8" clear plexi piece and cut it to size, then drilled roughly (400) 3/8" holes through it. What I dont like is how it will allow water to go around the sides since it doesn't have a pan shape or a rib around the edges. I'd think most of the water is going to flow right around it even though it's a fairly snug fit between the baffles.
I've finished the wet/dry based on several of your recommendations. I'm happy with the filter except for one part.. The trickle area above the bioballs. What I did was set the plastic light diffuser on top of the bioballs to make a flat area, then took a 1/8" clear plexi piece and cut it to size, then drilled roughly (400) 3/8" holes through it. What I dont like is how it will allow water to go around the sides since it doesn't have a pan shape or a rib around the edges. I'd think most of the water is going to flow right around it even though it's a fairly snug fit between the baffles. Would it work well if I stuffed tons of filter floss/sponges around the edges? I know it wont be water tight, but it'll slow it down at least, right?
I went around home depot to get some other ideas too.. I came up with a PVC shower liner that comes in a roll. I could drill holes in it but am wondering how to shape it to have a bowl so that all of the water goes through the holes as a "trickle".
Thoughts?
View attachment 901275
So I'm using:
- 75 Gallon Tank
- (4) 7"x16" Filter socks (100 Micron)
- 15 Gallons of bioballs
- PVC frame to hold filter socks up
- PVC frame to hold bio balls 2 inches up
It's probably overkill on the filter socks since I'm looking to run about 1000 GPH, but I'm hoping I wont have to worry about them getting backed up very often.