Brian asked... > Just a question for those who use porta poti/elson type > units, what do you use in yours, Formaldehyde or not ?? and > how long do you leave it before empting ?
Generally used bog standard (pun intended) Aqua Kem Blue in ours - every time we tried anything else we went back to it! Not the cheapest, but doesn't smell as bad as some of the others. When boating the loo always got emptied soon after being full! We carried at least one spare tank which helped. Glen
