C
Cathy
Peggy:We have used KO in our holding tank since the purchase of our boat last year (new). Heads are Vacu-flush and use fresh water only. When sitting in the cockpit, we occasionally smell odors after the forward head is flushed. We suspect there is not enough air getting thru the vent for the KO to do its job. We've ordered your book, but need help while we wait for it to arrive.Thanks.