- Joined
- Nov 27, 2019
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I'm spec'ing out my 170-180g build. It'll have a Tideline 48" sump (65g) for a total volume of 220g +/-. I will buying a Modular Marine overflow for the tank. The 1600gph model says it's rated for up to 175g tanks. At 3-5x turnover, I only calculate 525-875gph through the sump. That being said, I'm pushing up against the recommended limit of MM. If I go up to their 1800gph model, it upgrades from 1" drains (on the 1600) to 1 1/2" drains. Is there any disadvantage to having the larger diameter drain pipes/bulkheads? This is my first tank with a sump, so I really appreciate your collective expertise!