Ideas for trapping amphipods?????

Good idea, there's a piece or two in there that is very porous. Yes, it was an established FOWLR. I'll give this trap a couple days and then start pulling some of the L/R out. There is definitely places that they congregate right now.

 

I have figured an easy way to do this. Stocked the tank with a ton of amphipods and some "mini" brittles today. I just yank out a piece of chaeto from my fuge. Stick some shrimp in the center and put it in the amphipod tank for about 2-3 days. Simply remove ball of chaeto and put in display for 2 days. Chaeto then goes back to fuge. I got to looking around my tank last night when the moon came up. Not only is the population rediculous, they are monstrous size. I am also starting to see copepods in my fuge. I seeded the fuge a few weeks back. They are too small to make out but, aren't isopods or amphipods.

 

I've done something similar to that using siphon. The problem is that they are too strong, they tend to cling to everything pretty tightly when they are being sucked up. + I don't want to suck up any of the substrate.