bulkhead/hole sizes???

[mflamb]

My first tank over 125 gallons. Ordered a 310 and need to know what to do for overflows and bulkheads. Should I use 2 or 3? What sizes do you recommend. Reef with fish and live rock, sump and fuge, skimmer. Want to turn over about 4700 gph total. Thanks for any help.

 

[Fiziksgeek]

Read as much as you can around here. Look at similar sized tanks, then decide on your own. Thats the best way to go!

 

[achilles1]

I have 2-2" drains and 2-1 1/2" returns and 1-1 1/2 drain/refill that is used for large water changes on my 300. With drains bigger is always better as you want to minimize your chances of a clog caused by snails, fish, Murphy or whatever. Also, in the future if your needs change it is easier to restrict a larger pipe than it is to add a larger hole.

My drains are large enough that if one should become completely clogged the other one can handle the full flow of my return pump.

Also, use the drain calculator on the RC home page. That should help.