Possible Used Aquarium Purchase - Flow Rate

[Forty-Two]

Hi - a question for the experts out there.

I have an opportunity to purchase a 1000L aquarium - it was newly built and the owner doesnt want to deal with customs to bring it into the country. Its going for a good price.

Leaving the customs issues aside - it has 2X50mm return pipes (to the sump) - and 1X32mm inflow (from the sump back to the tank).

The inflow seems quite low to me as 1X32mm - would this be a problem?

Thanks

 

[shwareefer]

A 32mm pipe can drain almost 4000l/hr with just gravity, so under pressure from a pump you could quadruple that. Lots of charts and calculators on the web for this.

 

[vetteguy53081]

You can increase line diameter or stronger flow return pump

 

[Forty-Two]

Will increasing the line diameter have an effect if the hole going into the tank is 32mm?

Im not worried about the drain at 2X50mm - Im concerned about whether there would be enough flow going back into the tank. The pump can handle it - its spec'd for tank of this size (its a royal exclusive dragon X I believe) - Im more concerned about the single pipe itself.

The tank Im having designed and built is 2X40mm coming back into the tank - whereas this tank only has 1X32mm.