pretty sure the first design you pictured won't work. the one w/ a single pipe in the tank won't work for your flow, either. i used 2 1/4" on mine w/ 870 gph @ 6'
I’m unaware of a new design.I'll bring a thread back from the dead. Does anyone know the new to flow rates with Joey's new design. He said they're much more efficient but there's no numbers I could find
Without him testing it as compared to some other design and properly calculating flows of both I wouldn’t count on his claims being accurate.I'm just curious if anyone can up with a new chart with his increase in efficiency. He's claiming 60% increase do that means I only need one 1" overflow for my 125 if that's the case