I am cleaning up the plumbing on my 77 H25. Since I will convert to a porta-pottie I will not need a holding tank only freshwater tank - fine since this is really a day cruiser.The boat only has a holding tank - a hard plastic 15-20 gal. - located under the V-berth. The owner ripped out the freshwater tank for some reason.My options seem to be pull the holding tank - DETOX with bleach - and use it for the freshwater tank (washing dishes etc - no drinking). Do you see any problem with cleaning and reinstalling back into the fore section of the boat? Others seem to have their fw tank under the cockpit.Thanks!Mike