I quite like the idea of building my own sump and you can get just tanks for quite cheap in some places. Just have to drill and section it up right? Anyway closer to the time I would research making one.
I heard that for filteration you need 5 times filteration for the tank so at about 850 litres wouldn't i need about 4000lph filter. The eheim and fluval only go up to 2300 lph would i need a bigger better one or would this filter be ok?