The water level in my sump is 10", the ASM G3 is touching the bottom but I had to use an eggcrate platform to raise the BB 5000 to the same level of the hole on the ASM´s body.
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As you can see from the pic, the body of the BB 5000 is raising 1" above the water, and the inlet rests barely submerged.
The water level in the skimmers body also decreased a bit, I think it has to do with the fact that it draws more air than water.
I called the LFS guy who´s gonna make the alpha cone 250 replica and told him about this, I really don´t know what the difference is with the original red dragon and as far as I know the Laguna askoll is the same.
I asked him if it would work on a large alpha cone 250 and he said yes, he said the outlet tube of the skimmer only needs to be adjusted to the pump and that it will do the job.