That will be very cool, and you will have a very large overall capacity The main tank is 75 US gallons (62 UK gallons) according to the PFK aquarium volume calculator...
Cople of the new tank and some of the SH's the new is is 65G going to be using the old 36x12x16 as a sump. Might take ne a while to build because the girlfriend didn't realize it was going to be that! BIG......
Shout shout screem screem..... kiss kiss........ the old but you know this will be the last tank! (yea right!)
Won her over just about tho shes not too happy about it. but Is going ahead. Got myself a 2500lph return got the lighting (new tank came with 3 T548" tubes one blue moon) got the PH's LR and sand need to do the pipework build new stand then move everthing over.
The main tank is 75 US gallons (62 UK gallons) according to the PFK aquarium volume calculator... 
Love the SH'd too, gorgeous patterns. 
