drain / return / pump size?

nicolicious

New member
sorry is this has been asked a million times, i just dont know how to word it in the search function...

I have a 90 gallon standard size reef tank. my drain size is 3/4 pipe (but i reduced it to 1/2 under the tank.

the return is 1/2 pipe the turns into 3/4 in the overflow...

the return pump i am not sure about but i know its about 5 years old and was originally purchased for my old 55 gallon... I really in the market to upgrade to a proper size return pump anyway so any suggestions for size would help me go in the right direction....

so what should pipe sizes be for the drain / return / and what gph return should i get?

Im also building a 35 gallon refug too....thanks for all the help in advance.....
 
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