Hi Steve,
I add 5-6 ml of straight SeaKlear to a 40 gallon sump. It mixes around well in there and then travels to my refugium, where it is filtered through two 100 Micron filter pads before going into the 'fuge (I noticed that it killed off thousands of little feather dusters in that sump). The water leaving the 'fuge passes through a 10 micron filter sock and then enters my main sump. At this point, there is no visible cloudiness. At one point, I was dosing the 5-6 ml almost daily, now, I dose it maybe twice a week.
I noticed another difference on the label of the new bottle of SeaKlear. The old one said "Effective- 1 quart removes at least 9,000 PPB of Orthophosphates per 10,000 gallons of water" Also, "Nontoxic-100% safe for your family and the environment"
New bottle says "Effective-1 quart removes at least 3,000 PPB of orthophosphates per 10,000 gallons of water" and "environmentally friendly" Both bottles were about $33.00/ea.
I sent an email to Poolgeek.com to see if they can/will do anything.