Hey Chris.
I was using a LG 4mdqx-sc to go up to the main tank. I also had my skimmer intake plumbed over the sump wall with no problems. Just have to use very large intake plumbing. I used all 1.5". It's a bit of a pain to prime but once it's done it's good.
cheerrs
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No matter what the morrow brings, inventors keep inventing things.
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Jonathan
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www.cakerybakery.ca
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