55G DT and I have room for a 20 G sump. I just picked up a 750 GPH pump. The LFS sold me 3/4 " bulkheads but now that they are in I found out that they are actually 1 ". I drilled for these bulkheads so they fit but it was a surprise. Is it better to run a PVC/ABS type tube or a flexable hose such as pond hose?
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