GPH

Hello, I was wondering on a few specs... I am in the works of building a 900 gallon aquarium (120" x 48" x 36") and i was wondering how to know which size of holes i needed drilled. I am looking for 4k to 5k GPH. I am planning on only having one island for the return, with two holes in that island. I was thinking 1" 1/2, but i keep hearing that that isnt large enough. Also I cant seem to find a protein skimmer for this large of an aquarium, any suggestions would be awesome.


Thanks!
Justin

Yes it is going to be a S/W tank. So your saying 3 2" holes?


Thanks,
Justin

I plan on having 2 overflow boxes expect on the ends of the aquarium. Also have 1 island return box. Each end will have 2 2" holes. Do you guys think this is capable of doing 4-5k GPH? Also should each hole go into their own tower in the wetdry? 1 hole is going to be going to a closed loop sand filter. So i have 3 holes that i need to route.

Thanks,
Justin