UPDATE!!!


Tank has been delivered, and I visisted our local marine shop in leicester to get the pipework that is needed to plumb it all in however he didn't have the 40mm fittings i needed in stock, i've got all the 32mm return pipework, valves, reducers, etc, but still need the 40m bulkhead connectors, pipework and elbows etc....


Question....: can i use screwfix Floplast 40mm solvent weld waste pipe, or is it not suitable.


https://www.screwfix.com/p/floplast-solvent-weld-waste-pipe-grey-40mm-x-3m/91997


I then need to get from 20mm pvc-u pipe on the return, via valve to phosphate reactor, and connect to their supplied green pipe.  what sort of connector do i need?


finally the return pipework and the return head which comes through the weir is in 32mm.  can i buy a duck bill head for this or do i need to make my own?


Thanks as always!