I recently picked up a use glasscage 90 gallon it’s been drilled for 1.5 inch bulkhead drain line and 1 inch return line. Should I use the 1.5 inch drain size or reduce it with an adapter to 1 or 1 1/4 pipe? Just wondering how loud a 1.5 inch drain would be, I’ll be using a 30 gallon sump. Could anyone point me towards diagrams to build a quieter drain. My 75 gallon has a 1 1/4 drain but someone reduced drain to a 1 inch to use an adjustable drain pipe kit