I have one of those Grocco high volume/pressurized washdown pumps installed on my boat. Actually installed it last year but only just wired it up this weekend for the first time and ran it. I think its model number "GRCC6012V" from boatfix. Do you have to use a full size regular hose with this unit or do you use one of the coiled type? I seem to have a problem with it pulsing and it doesn't seem to put out the 7.5gal/min that it says it would. I figured maybe the diameter of the coiled hose was too small for it since its a higher volume pumps, moreso than some of the others you can get.
Thanks,
Jack
Thanks,
Jack