Knuckle Cracker

Point all your blue emitters at the leftmost blue emitter and have that one send all particles straight into the main platform (you need the particle control gem, of course). This in itself is not enough to take it back but it helps put on a good amount of pressure, and it'll get you the omni spots to the right of the platform. Fill these with omnis. Now use the rest of the omnis to lathe out an area of the main platform. It should contain the energy source in the center plus the two rightmost turrets, which gives you a sort of sideways T shape of land. Take out the one wide strip just to the right of that too and all blue particles will hit your carved out piece of land. The key here is that quite a lot of red particles will die of old age before they hit your lathed out part, even though they made it to the platform itself. If this isn't enough, you can keep the bottom right and top right red emitters busy with some of your own ships. Now park a few omnis near the energy source and it's yours again.

You can now build ships right near the totems, just far away enough from the particle streams so they're still safe. I put one of those small ships with four cannons first, to clear the mire. Then I destroyed that and built one of the lathing ships, then did the same with the other totem. It's very important that you turn off the guns on the ships and have the cannons shoot at mire only. If they bother any of the particles, the particles slow down and come in to eat your ship.