[easycleaner]

Thanks Steve-uk and alanwilson for your help, Iam going to set mine up Steves way first and test it then set it up Alans way and test it and hope to post the result. I think the call one way in series and the other in parellel. (I think thats what I rember from physics loads of years ago!)
Cheers Mart.

[alanwilson]

just remember you need good feed pressure and flow for it to work well in parrallel - benefit is increased prod rate and increased membrane life