Diameter of piping for sump tank

[kschew1498]

Help!

I wish to seek some advise on the recommended diameter of the outgoing and incoming pipe diameter for a sump tank? I will be using a 300gallon/hr overflow box and am constructing the piping now. My overflowing connection is 33mm!

Any advise on the pipe size?

[Benz...]

from your tank to your sump.. use 40mm.... return use 20mm... use the grey types and not the white types hor....

[kschew1498]

Any particular reason why the grey one? nearly bought the white one just now but U-turn as I was unsure of the size . 1ft for 1$ for 40mm white color pipe, cheap or not huh??

[reefer guy]

from your tank to your sump.. use 40mm.... return use 20mm... use the grey types and not the white types hor....

40 mm???

25mm out and in is 20mm then adaptor to 15mm would be good enough

[Benz...]

better for flow control lor... i work on the principle that the overflow would be the same amount that the pump would put into the tank... and a bigger pipe would have less noise than a smaller pipe...

white pipes are mean for drain usage and have no pressure rating... grey ones are pressure rated.. and also remember... use grey pipes... must use grey fittings otherwise it would not fit lor...

price wise.. okie loe.. both cost abt the same... if you buy in short length.. price is ard there....

[reefer guy]

but the way i c it, no need for flow control, coz its flow is by gravity....ive heard that grey is better than white, but not necessarily white wont do good.... btw, i am using white and i have no problems w it....

correct me if im wrong....

[kschew1498]

thanks gentlemen...tomorrow going for a shopping spree!!

[CalciumReef]

http://reefcentral.com/calc/drain.php

Might be helpful to be sure

[ah^siao]

the grey pipes are thicker than the white ones...

more lasting?

[Benz...]

just that the grey ones are pressure rated lor....